My 5.5 Month Old Is An Awful Sleeper: Why This Happens And What’s Actually Working
It’s 2:14 a.m. and I’m leaning against the nursery door, one of my 3-year-old’s lost neon dinosaur socks stuck to the bottom of my fuzzy slipper. The half mug of cold coffee I brewed when I got up an hour ago is sweating on the hallway table behind me, and the baby monitor glows blue through the crack in the door, picking up the constant low grunting that’s been going on for 45 minutes straight. Six weeks ago, this baby was only waking once a night to eat, sometimes going six or seven hours straight. I’d started bragging to my friends that second babies are easier, that I’d nailed the sleep thing this time around. Now I’m lucky if I get two hours of uninterrupted sleep, and I’ve eaten three straight days of lunch standing over the sink because I’m too tired to clean a plate.
I did all the reading with my first. I took the sleep course, followed the schedule, had her sleeping through the night by 12 weeks. So when my 5.5-month-old suddenly turned into the world’s worst sleeper, I went straight to Google at 3 a.m. like every other tired parent. The forums were full of the usual hot takes: I was holding her too much, I was feeding her too often at night, I’d messed up her sleep habits before she even turned six months old, and if I didn’t do strict cry-it-out now, she’d still be waking up when she was five. I tried the graduated check-in method that worked for my first, but it just made her scream harder, and half the time it woke my oldest up down the hall, which left both of us crying and me ready to pull my hair out. I took her to the pediatrician last week, just to rule out the scary stuff: ear infection, reflux, low weight gain. She’s 16 pounds, happy as can be during the day, rolling all over the living room, grabbing everything in sight. There’s nothing wrong with her, the doctor said. She’s just a 5.5-month-old baby, and 5.5-month-olds sometimes don’t sleep well.
I started jotting down notes in my phone whenever she woke up, just to see if I could spot a pattern. I wrote down how long she napped that day, what we did before bedtime, how many times she woke up, and what calmed her down. After a week, it was pretty obvious. On days we got home early from daycare drop off and pick up, and she had 20 extra minutes to roll around on the living room rug, she slept a full two hours more that night. On days we were running late, skipping play time to get dinner on the table, and put her down straight after her bottle, she woke up four or five times. I also realized that because of our busy schedule shuffling my oldest to and from preschool, her total daily nap time had dropped by almost 45 minutes over the past month. I’d assumed she was dropping her third nap early, like my first did, but really she was just getting overtired because we kept cutting her naps short.
The pediatrician reminded me that between 4 and 6 months, babies’ brains are growing faster than they will at almost any other point. The 4-month sleep regression gets all the attention, but the next six weeks after that are just as chaotic. They’re learning to roll from back to belly, sit up on their own, grab toys, recognize faces from across the room – all that new information doesn’t just shut off when it’s bedtime. They practice their new skills in the crib when they should be sleeping. I peaked through the nursery door one night a couple weeks ago and saw her doing it: just rolling over and over, grunting, like she was doing drills. She’d get to her belly, forget how to roll back, get frustrated, and cry until I came in. It wasn’t that she wanted me to hold her, it was that her brain was too busy working to turn off for the night.
I didn’t make any big, dramatic changes to our routine. I tried four small things that fit around our life with a preschooler, and they’ve already made a big difference. First, I added 10 minutes of unstructured skill practice right before we start the bedtime routine. I just lay out a blanket on the floor, sit next to her, and let her roll and twist and practice sitting up. If she gets stuck on her belly, I help her roll back, but otherwise I just let her work it out. It gets all that practicing out of her system before she gets in the crib. Second, I shifted bedtime 15 minutes earlier, even if that means I have to rush through my oldest’s bedtime story some nights. I’d forgotten that overtired babies make extra stress hormones that keep them from falling into a deep sleep, so they wake up more often. Moving bedtime up just 15 minutes cut her first middle-of-the-night wake up by almost an hour. Third, I switched her from a loose swaddle to a lightweight cotton sleep sack with fitted arm cuffs. She kept breaking out of the swaddle, getting her arms stuck, and slapping herself in the face when she flailed, which fully woke her up. The sleep sack keeps her warm, lets her roll freely, and the cuffs stop her from waking herself up with random arm movements. Fourth, I wait two full minutes before I go in to check on her when she fusses. I used to jump up off the couch the second I heard any noise on the monitor, but nine times out of 10, she’s just coming out of a light sleep cycle or rearranging her blanket, and she’ll put herself back to sleep if I give her a minute. Jumping in just fully wakes her up when she was almost settled.
It’s been 10 days of these small changes, and we’re now down to one or two wake ups a night, instead of four or five. Last night, she only woke up once at 4 a.m. for a bottle, then went right back down until 6:30. It’s not perfect. Some nights she still fights it, some nights I’m still standing in the hallway at 2 a.m. with cold coffee and a dinosaur sock on my slipper. I don’t think we’re getting 12 straight hours of sleep any time soon, and that’s fine. This isn’t a failure of good parenting or bad sleep planning, it’s just a messy part of development. Small, low-fuss changes that fit your life work a lot better than any strict routine someone on the internet tells you you have to follow. Right now, this is working for us, and that’s enough.
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