My 5.5 Month Old Is An Awful Sleeper: Why This Happens + What I’m Trying That Works
2:17 a.m. I’m leaning against the nursery doorframe, my 5.5 month old Lila pressed to my chest, her tiny fist tangled in the neck of my faded college hoodie. The half-full mug of decaf I grabbed when she first fussed is sweating on the hall table, gone cold an hour ago. My left sock has a hole at the big toe, and I can feel the cool baseboard through the thin fabric. She just fell back asleep 10 minutes ago, and if I set her down in her crib right now, I know she’ll be screaming again before I hit the bottom of the stairs.
A month ago, I thought we’d cracked this whole baby sleep thing. At 4.5 months, Lila was going down at 7 p.m. sharp, waking once around 2 a.m. for a feed, then sleeping straight until 6:30. I even had time to fold laundry and watch half an episode of my show after my partner left for work before Lila woke up. I nodded along when other parents complained about bad sleep, secretly relieved we’d dodged the bullet. Then 5.5 months rolled around, and everything fell apart. Now some nights she wakes every 45 minutes. Last week I spent three straight hours walking circles around the living room, bouncing her on my yoga ball, because she wouldn’t settle no matter what I did.
Everyone has an opinion. My mom texts me to ask if I’ve started her on oatmeal yet, swears a little cereal in her bottle before bed will fill her up and keep her asleep. My best friend, whose 1-year-old sleeps 12 hours straight, asked if I’d skipped any steps in our bedtime routine, or if I was picking her up too much. The baby app on my phone says this is just the tail end of the 4-month sleep regression, that it should clear up any day now. But it’s been two weeks, and I’m still operating on 2-hour chunks of sleep at a time.
I got tired of guessing, so I started jotting one-line notes in my phone after each wake up, just to see if I could spot a pattern. What I noticed surprised me. Nine out of 10 wake ups happened 20 to 30 minutes after Lila fell asleep, right when her body shifts from deep sleep to lighter active sleep. And every single time I went in to check on her, she was on her belly, face pressed into the crib sheet, fussing, with her little legs kicking.
Lila just learned to roll from back to belly two weeks ago. She can do it over and over during the day when she’s playing, but she still can’t roll back to her back. She gets stuck. She’s so busy practicing this new skill that she does it in her sleep, then panics when she can’t fix it. That’s all it is. It’s not that I messed up sleep training, it’s not that she’s hungry, it’s not that she needs more of me or less of me. She’s just learning something new, and it’s messing with her sleep.
I used to run in the second I heard her fuss, flip her back, shush her, rock her a little to get her back to sleep. But that just woke her up more, and 20 minutes later she’d roll right back again. One night I was so tired I just sat on the stairs outside her room, staring at the monitor, and didn’t move. She fussed, wiggled, huffed, and two minutes later she went quiet. She’d fallen back asleep on her belly, all on her own. That’s when I started tweaking small things, no big overhaul of our routine, just tiny changes that fit what we were already doing.
First, I started giving her 3 full minutes to sort herself out before I go in. I set a little timer on my watch, just to keep myself from jumping up out of habit. Most nights, she settles on her own, either by wiggling back to her back or by getting comfortable on her belly and falling back asleep. If she’s still crying after 3 minutes, I go in. When I do go in, I keep it as boring as possible. I don’t turn on the overhead light, I don’t talk to her, I just reach into the crib, flip her back to her back if she’s stuck, tap her tummy once, and walk right back out. I stopped picking her up unless she’s actually hysterical, or it’s been more than 3 hours since her last feed. That cut out the habit of waking up to cuddle that was starting to form.
The other thing I added is a 10-minute rolling practice session right after her afternoon nap. We lay on the play mat on the floor, I show her how to tuck her elbow under her shoulder to roll back, and I help her practice a few times. She’s still getting the hang of it, but every few days she does it on her own now during playtime. That makes sense; she needs to build the muscle memory during the day so she can pull it off when she’s half asleep at night.
It’s not fixed. Some nights are still garbage. Last night she woke up four times, and I walked out of the bedroom at 5 a.m. with my hair half up and a headache that didn’t go away until after my second coffee. Some nights she sleeps 7 hours straight, and I wake up shocked that I didn’t hear her once.
I used to think bad sleep at this age meant I was doing something wrong, that I had to fix it immediately or it would become a forever habit. Now I know it’s just part of what happens when a baby’s brain and body are growing this fast. They don’t stop developing when they go to sleep. They’re still practicing, still learning, still figuring out how their bodies work.
Right now, this is working for us. I don’t know what the next milestone will be, or when she’ll sleep through the night again. For now, I’ll keep the timer on my watch, keep practicing rolling after nap time, and keep an extra mug of coffee brewed in the morning. That’s enough.
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