When Can Your Baby Sleep On Their Stomach? 3 Signs To Watch For

Picture of Robyn Rosenblum, MD, FAAP Medically reviewed by
Robyn Rosenblum, MD, FAAP

Baby sleeping on her stomach while mom rubs her back

Your baby can officially start sleeping on their stomach by the time they reach their first birthday; however, if they can roll over both ways and regularly roll onto their stomach at night, they’re already showing signs of readiness.

Safer sleep is one of the most important concerns a new parent can have, and worrying about your little one can quite literally keep you up at night. 

In this article, we’ll explain when your baby can sleep on their stomach and the signs that show they’re getting strong enough to do so. We’ll also dispel some popular myths about back sleeping, which run contrary to the American Academy of Pediatrics’ important sleep guidelines. 

Key Takeaways

  1. Babies can sleep on their stomachs when they are one year old. Before that, every time you put them down to sleep, they should be placed on their back.
  2. Between two and four months, babies may start showing signs of rolling over. Make sure that if your child is beginning to roll, you stop swaddling them immediately.
  3. Signs that your little one is ready to sleep on their stomach include having strong head control, being able to roll over both ways, and rolling onto their stomach in the middle of the night.
  4. If your baby can already roll both ways on their own, something that usually happens around four to six months, you don't need to turn them back over if they roll in their sleep.
  5. To help your baby sleep better on their back, check the mattress comfort, verify room temperature, practice back sleeping at naptime, try a pacifier, and swaddle them (if they’re not rolling). You can also try establishing a bedtime routine and encouraging self-soothing.

Table of contents

Safer sleep recommendations

baby sleeping on back in crib

Before getting into the nitty-gritty of stomach sleeping for your baby, you first have to know and understand the sleep recommendations from the American Academy of Pediatrics (AAP). (We’ll also give you the low-down on how long these recommendations should be followed.)

Let’s take a look.

Provide a firm sleep surface.

According to the AAP, your baby should share a room with you for at least the first six months, but not sleep on the same surface as you. This means your baby needs their own crib or bassinet with a firm bottom. 

Fortunately, the Newton Crib Mattress meets all your baby’s sleep needs! Not only is it firm, but it’s also comfortable, breathable, and washable. The Wovenaire® core can be recycled where facilities exist (recycling facilities may not exist in all areas; check locally).

Our unique design is intended to help reduce the risk of suffocation* should your baby roll onto their stomach. *Based on independent testing.

This is because our Wovenaire® core is 90% air by volume. Creating this unique design, we were able to leave behind foam, latex, springs, and glue, which are materials some parents prefer to avoid.

If you’re looking for something a bit smaller for your baby’s early months, our Bassinet & Bedside Sleeper is a great choice. Its mattress utilizes the same Wovenaire® technology that our crib mattresses are known for. It’s breathable, eco-friendly, and completely washable! 

And since you can take it apart easily, it’s perfect for travel. With the Bassinet & Bedside Sleeper, your baby can sleep in a safe place no matter where life takes you. 

Avoid inclined sleep spaces.

Though inclined sleepers and rockers were popular for a few years, recent studies show that any surface inclined by more than 10 degrees is unsafe for babies. In fact, they've led to nearly 100 deaths.

Little ones are more likely to fall asleep with their chin resting on their chest when tilted. They simply don't have the neck strength to lift their heads back up. And, unfortunately, when their chin is on their chest, a baby's airway can get blocked. 

That’s why not letting your infant fall asleep in their rocker, swing, or other inclined equipment is best. Instead, let them sleep safely on a flat, firm mattress.

Eliminate any extras in their crib.

It’s important to place your baby down in their crib or bassinet without soft items, such as cute blankets, stuffed animals, crib bumpers, or pillows. Your baby can bury their face in these items and struggle to breathe. 

If you use these items for decor or picture purposes, remove them immediately afterward, and always supervise your baby during this time. 

Also, loose bedding can be hazardous to your little one. Always use a breathable, fitted sheet that fits snugly around the mattress, like our Organic Cotton Sheets. Ensure your sheets fit properly if you’re using a mini-crib or other non-standard product. 

Place baby on their back to sleep. 

baby sleeping on back in bassinet

The AAP also recommends always placing your baby on their back when it's time for sleep. This is the safest position for your baby and can help reduce the risk of suffocation.

Dangers of stomach sleeping

Increased rebreathing

When your baby's face is pressed against a soft surface, it can cause them to rebreathe the same air repeatedly. This is dangerous because it deprives your baby of oxygen and increases carbon dioxide levels in their body.

Overheating

When your baby sleeps on their stomach, they can overheat more easily. In this position, their breath is trapped against the mattress, which can cause the temperature to rise. 

Increased suffocation risk

Where does your face go when you sleep on your stomach? Right into the bed. This can be extremely dangerous for babies because their airways aren't as developed as older children’s. They also lack the muscle tone to turn their head and escape the mattress.

When your baby has their face pressed into their sleep surface, especially one that isn't breathable, their chances of suffocation increase.

Harder to wake up

Stomach sleeping can cause your baby to sleep more deeply. Walking them up for dream feeds or diaper changes is easier when they're on their back.

Misaligned spine

Your baby’s spine can become misaligned when they sleep on their side or stomach. This could cause chronic back or shoulder pain later in life.

Stop swaddling when your baby shows signs of rolling.

Swaddles are great for keeping newborns tight and cozy...kind of like the womb. Swaddle blankets and sleep sacks make it easy to wrap your little one and keep them warm at night without a traditional blanket. 

However, even though most swaddles are breathable, you should stop swaddling your baby when they start to show signs of rolling over, which is usually around two to four months. Their hands are placed tightly by their side in a swaddle, so if they were to roll over, there’s no way they’d be able to roll back. They need their arms to help.

Note: Your baby should never sleep on their tummy while they’re in a swaddle, no matter their age.

When can your baby sleep on their stomach? 

Your baby should not be put to sleep on their stomach until they’re one year old. As mentioned above, they should always be placed on their back to sleep during the first 12 months to ensure a safer sleeping position. 

However, if your baby can already roll both ways on their own, something that usually happens around four to six months, you don't need to turn them back over if they roll onto their stomach while sleeping.

Your baby will let you know when they’re ready, so here are some signs to watch for that your little one is prepared to sleep on their stomach. 

1) Good head control 

Before your baby can safely sleep on their stomach, they need to be able to hold their head up…and not just for a few minutes. Good head control means they’re holding their head up consistently. 

This is important so your baby’s airway doesn’t get restricted. If your baby is on their stomach, it poses a suffocation risk since they can’t move their head to open up their airway. 

Once they have good head control, however, your little one can move their head in a way that’s safe for them to breathe. (This is also why it’s so important to have a firm, breathable mattress starting from day one!) 

2) Rolling over both ways

Rolling from back to tummy and tummy to back is one milestone your baby needs to master before they can sleep on their stomach.

This milestone is important because if they’re in an uncomfortable position where they could have trouble breathing, your baby is able to move themselves into a safe position.

One way to help your baby achieve this goal is by giving them plenty of tummy time during the day. This strengthens lots of muscles, like their neck and back muscles, that are important as they continue to grow. 

Your baby is getting stronger by the day. Before you know it, they’ll be rolling over both ways! This is a good thing; just don’t leave your baby unattended, as once they start rolling, they won’t stop. 

If you leave the room for one second, your baby could roll across the room!

3) Rolling onto tummy in the middle of the night 

he last sign that your baby is ready to sleep on their stomach is when they’re already rolling onto their tummy while they’re sleeping! It means your little one has mastered the skill to sleep in this position. 

Again, always place your baby on their back to sleep at least until their first birthday, but if your baby is already rolling to their stomach, there’s no need to turn them onto their back.

What to do if your baby rolls onto their stomach

baby sleeping on stomach

Many parents lose sleep during the early days of their baby’s life, and not just because they’re waking up to feed them every three to four hours. 

It’s completely normal to feel the need to check on your baby’s breathing patterns and sleep position throughout the night. So what do you do if you see that they’re sleeping on their stomach?

As long as your little one is showing the signs we mentioned above, you can leave them in this position. (However, if you need to check in on them for your peace of mind, by all means, do so!)  

If your baby is not yet showing all readiness signs, you’ll need to place them on their back again if they roll.

Concerns about back sleeping 

Ask any doctor, and they’ll tell you that your baby should sleep on their back. The American Academy of Pediatrics calls out this sleep position specifically as the one and only in their sleep guidelines for newborns. 

But still, there are skeptics. Let’s take a moment to debunk a few of the myths surrounding back sleeping.

Myth #1: If my baby sleeps on their back, they’ll get a flat head.

Although parents may worry that when their baby sleeps on their back too much, it will cause flat head syndrome, or plagiocephaly, the condition is really the result of remaining in the same position, whatever that may be, for a prolonged time.

In fact, extended use of car seats, swings, and rockers can also cause flat head, namely because these gear items restrict baby’s head position, and as babies have soft heads, the compression can, over time, cause a flat spot.

The best thing to do is to change your baby’s position throughout the day. Do more tummy time; limit time in carriers, car seats, or anything that restricts their head movement; and move them into different positions while they’re awake.

You can even place your baby at different ends of the bed, as this will encourage them to turn their head in both directions.

One thing is certain: the risk of putting a baby to bed on their side or stomach far outweighs the possibility of a flat spot on their head that can be corrected.

If you have any concerns about your child’s head shape, talk to your pediatrician. They will have personalized recommendations you can follow. 

Myth #2: Babies sleep better on their stomachs.

Mom checking on baby that sleeping on back

While babies do tend to sleep more deeply when they’re on their stomachs, that is not good for newborns. They need to wake regularly for feedings and diaper changes. They’re more likely to sleep too long and wake up inconsolable and hungry when they're on their stomach.  

However, once your baby is old enough to meet the milestones listed above, they’re less likely to need a night-time feed. At that point, it’s OK that they’re sleeping more deeply.

Myth #3: Stomach sleeping aids digestion. 

You may think that the gentle pressure on your baby’s abdomen that comes with stomach sleeping could help with digestion, especially if they suffer from reflux or gas.

Although anecdotal evidence for this theory exists, the higher risks associated with stomach sleeping outweigh the benefits. 

When it comes to bedtime, stick to placing your baby on their back. If your little one has digestive issues, try addressing them by doing bicycle legs, giving them an abdominal massage, and encouraging more tummy time while they’re awake.

Myth #4: Snoring babies should sleep on their stomach. 

Some babies, especially those with enlarged tonsils or adenoids, snore. If your child snores, it’s a sign that their airway is obstructed or that they have sleep apnea. This is something you need to bring up with their medical provider the next time you see them.

While adults who snore fare better if they sleep on their stomachs, that’s not the case with infants. Putting them on their stomach will increase their chances of having a blocked airway. 

What to do if your baby prefers sleeping on their stomach

Most babies don’t mind sleeping on their back and actually despise tummy time. However, if your baby cries when you lay them in this position for bedtime, talk with their doctor about your concerns.

Also, if your child cries when they’re on their back, remember that this rule is only in place for a short time. Once they can safely roll both ways and control their head, they can roll over onto their stomach and sleep that way. Until then, it’s worth a little fussing to keep them safe.

To help your little one stay comfortable while on their back, here are a few tips to try:

Check mattress comfort.

Your baby may be experiencing a Princess and the Pea moment, which is to say they’re having a hard time sleeping on their back because their mattress is uncomfortable. This could be especially true if they’re sleeping on one of those super thin ones that come with most pack-and-plays or bassinets.

However, your baby will love the breathable mattress that comes with our Travel Crib & Play Yard or Bassinet & Bedside Sleeper. And for their crib, you can use our Crib Mattress. Our mattresses are firm and breathable, allowing for better airflow. You can even wash them!

Rest assured, no matter which size you go with, your baby will sleep comfortably! 

Verify the room’s temperature. 

If your little one is too cold or too hot, they won’t be able to sleep well. To avoid this, monitor their room’s temperature and adjust as needed. 

The Sleep Foundation recommends keeping a nursery between 68-72 degrees Fahrenheit. You should also ensure their crib is away from the windows so they don’t have a draft blowing on them. 

Practice at nap time. 

Babies need naps throughout the day. When it’s time for a nap, practice the same safer sleep habits that you do at bedtime. Being consistent with their sleep position every time you put them down helps them adjust more quickly. 

But if you let them sleep on their stomach at nap time, when you’re around and watching them, you’ll only confuse your baby. So stick to their back all the time so they get used to it.  

Try a pacifier. 

Some babies are fussier than others. A pacifier can help soothe them when they’re feeling anxious. If your baby is a frequent night waker, try giving one to them before bedtime or when you notice them starting to stir. It can help them stay happily on their back. 

Swaddle them.

baby in a swaddle in crib

If your baby isn’t yet rolling over, try swaddling them. Sometimes the more they flail their arms and legs, the more awake they become. A tight swaddle can help them settle down quickly and get to sleep.

(Just remember to stop swaddling once your baby starts showing signs of rolling over!)

Establish a bedtime routine.

Your baby is still adjusting to life outside of the womb. To help them learn to relax and get ready for some shut-eye, try establishing a bedtime routine. It doesn't have to be complicated, but be consistent with it.

You can try bathing your baby, followed by snuggles with a story, and then sing a lullaby before you put them to bed. Doing the same thing night after night will help cue their body that it's time for sleep, not play. 

Encourage self-soothing.

Put your baby to bed when they’re drowsy but not yet asleep. And don’t wait until they’re over tired

They might fuss or cry for a few minutes but should settle down shortly and drift off to dreamland. If they don’t, go check on them and offer some comforting words and touch to let them know they’re not alone. 

Remember that all babies are different and some might take longer than others to get used to this. But with a little patience and consistency, your little one will eventually get the hang of sleeping on their back. 

Back to sleep

Mom watching baby in crib wondering when can baby sleep on stomach

In summary, placing your baby on their back is best until they’ve developed the muscles and skills to move to each side. Protect your little one by always using safer sleep practices, like laying them on a firm mattress and keeping their sleep space clear. 

Remember: Your baby shouldn’t sleep on their stomach until they’re at least one year old. And if your baby does end up rolling onto their tummy in the middle of the night, make sure they’ve met the indicators of readiness. 

If they’ve met these criteria, your baby can go ahead and sleep on their stomach; just place them on their back when you put them to bed. 

To give your baby a great night’s sleep and give you peace of mind, follow the tips we’ve mentioned here and use Newton products designed for safer sleep!

Frequently asked questions

Can I lay my 3-week-old on their stomach for tummy time?

Yes, if your 3-week-old is awake and is supervised by an adult, you can lay them on their stomach for tummy time. You may want to start with them lying on your chest, and be sure to keep it short: just one to two minutes a few times a day.

What are common tummy time mistakes?

Tummy time mistakes include starting right after a feeding, leaving the baby on their tummy for too long, and using surfaces that are too soft. 

You want to wait for at least 30 minutes after a feeding to enjoy some tummy time, and keep each session short, only one to two minutes. Choose a firm playmat or blanket on the floor instead of a soft couch or mattress, which are safety hazards.

What if my baby will only sleep on their stomach?

If your baby will only sleep on their stomach, you’re going to have to stop swaddling them immediately and take extra care to put them to bed on their back for every bedtime or naptime. If they’re not able to roll in both directions, contact your pediatrician.  

About the Contributors

Picture of Robyn Rosenblum, MD, FAAP

Medically reviewed by Robyn Rosenblum, MD, FAAP

Robyn Rosenblum is a general pediatrician with over 20 years of clinical experience. Her special interests include medical education and quality improvement. She is currently the Medical Director of a multispecialty practice in New York City where she also holds the positions of Director of Pediatric Continuing Medical Education and Director of Medical Student Education.

Picture of Krystal Blackman-Navarrete

Written by Krystal Blackman-Navarrete

Krystal Blackman-Navarrete leads the Customer Experience team at Newton. She combines her understanding of the benefits of better sleep with her passion for helping support families' individual journeys. A mother herself, she strives to bring safe sleep into every parent's home, knowing firsthand the comfort and peace of mind it brings.