As your baby grows, new milestones tend to show up fast and without much warning. Somewhere around 3–5 months (on average), rolling usually enters the chat and starts happening in the crib.
At first, this can be subtle. You may peek at the monitor and notice that your baby has scooted up into the top corner of their crib or is suddenly laying diagonal or perpendicular to how you put them down. Or — if you’re like our family — you may wake up one morning and your former back sleeper has suddenly become a full-on belly sleeper, literally overnight!
Totally normal. Kind of exciting. And also, a little anxiety-provoking!
If you’re wondering what you’re supposed to do when your baby starts rolling in the crib, here’s exactly how to handle it.
1. Celebrate the milestone!!
First — yes, this is a big deal in a great way! Rolling over is an important motor milestone and a sign that your baby is gaining strength, coordination, and body awareness. Even if it throws sleep off a bit (more on that later), this is progress. Take a second to appreciate that your baby’s body is doing what it’s designed to do.
2. Make sure your baby is sleeping safely
No more swaddle: Even before your baby starts to roll – when your baby is just beginning to show signs of rolling or is 10 weeks (whichever comes first) – they should no longer be swaddled. I know this can feel scary, especially if the startle reflex is still very present, but continuing to swaddle long-term actually delays integration of that reflex. Freeing your baby’s arms is how they move past it. Once you transition your baby out of the swaddle, you can put them in an arms-free, unweighted sleep sack for warmth and coziness.
Skip the Magic Merlin: Transition products designed to restrict movement — including weighted sleep sacks or very thick sleep suits like the Magic Merlin — may feel like a logical bridge, but they work against your baby’s natural ability to move and self-soothe. As babies become more mobile, free movement matters for both comfort and safety. Extra bulk can limit their ability to reposition themselves and increases the risk of overheating.
Transition them to a crib: If your baby has been unswaddled and is becoming more active, moving them to a crib is often helpful. Even if they technically still fit in their bassinet, babies who are rolling tend to sleep better with more space to move, adjust, and find their own comfortable position.
Don’t add bumpers: Even though you’re giving your baby a bigger space, they are likely still going to migrate to an edge or into a corner of the crib from time to time. Because of this, you may be really tempted to buy bumpers to keep their limbs inside the crib and/or cushion the sides of the crib. Please don’t. Per the AAP, bumpers – even mesh ones – are not safe for sleep in the crib. And frankly, they’re not needed. Babies will absolutely scoot, press up against the sides, and end up in corners. That’s normal. They learn the boundaries of their space over time, and it doesn’t hurt them or disrupt sleep the way parents often fear.
3. Expertly handle any sleep interruptions
New skills often mess with sleep. Rolling, sitting, crawling, talking, walking — all of it can temporarily interrupt sleep as your baby’s brain and body work overtime to practice.
You can read more about milestone-related sleep regressions here.
With rolling specifically, think about how many times overnight you change positions. If we had time-lapse camera on you all night long, you’d probably be bopping all over the place. Your baby’s ability to independently get themselves into a comfy sleep position is a self-soothing skill!
So what should you do when rolling happens overnight?
First, still always place your baby on their back when you put them down. If they roll onto their tummy independently, they can stay there — but you should never place them on their stomach yourself.
During the day, increase tummy time and rolling practice. You don’t have to go overboard, but a little extra exposure helps build mastery quicker. Once the novelty wear off, rolling feels less disruptive overnight (to them and you!)
If your baby rolls and continues sleeping, and they are sleeping safely, and your pediatrician hasn’t advised otherwise, you do not have to continually roll them back to their back. Most babies actually prefer to sleep on their tummies.
If your baby rolls and wakes up, give them a couple of minutes to see what they do. Can they get comfy on their tummy? Do they roll back over? Can they figure it out on their own? Make sure to give your baby some space to see what they’ll do for themselves.
If your baby is genuinely stuck and upset, it’s okay to go in and flip them back onto their back. Keep it brief and low-key — especially if you’re working on independent sleep, try not to linger or over-help. You kind of want to do it so quickly that they don’t even realize you were in there.
Now, you might flip them and leave the room and by the time you’re back out to the monitor they’ve rolled over again!! This is also really normal. If you continue to go in relatively quickly over and over again, no one is going to get any sleep. So consider giving them a little more time this time before you intervene. Because at some point, your baby is going to either find that they actually like being on their tummy or they are going to figure out how to get out of that position and into a more preferred one.
Rolling can come with a short adjustment period, but it’s a positive milestone, not a problem to fix. If things feel off for more than a week or two, or if sleep was already rocky to begin with, that’s a good time to get additional support. That’s what I’m here for!!
