The 8-month regression — it can land anywhere from 8 to 10 months — is developmental, not structural. Three things converge: a gross-motor leap (crawling, pulling to stand), a cognitive leap (object permanence, which makes your absence real for the first time), and often the 3→2 nap transition in the same month. The result is a baby who practices standing at 2 AM, cries hard when you leave, and fights naps they took happily a month ago.
It lasts 2–6 weeks, and the way through is mostly holding steady: the schedule that worked before still works; the baby's brain is just too busy to use it for a while.
What helps
- Hold the schedule. Two solid naps at the same times, bedtime 7–7:30 PM, an early bedtime on short-nap days. Do not drop a nap in the middle of a regression.
- Practice the skill by day. Lots of floor time to crawl, pull up and — critically — get back down. A baby who can sit from standing stops getting stuck in the crib at night.
- Play separation games. Peekaboo, leaving the room for ten seconds and coming back, cheerful goodbyes. Object permanence is learned; help it along.
- Keep bedtime the same, but warmer. A few extra minutes of cuddles before the crib, a consistent goodbye phrase, and a calm return if there is a real cry.
- Do not introduce new sleep aids you will have to remove in a month.
Standing in the crib
The single most common 8–10 month night waking is a baby standing, holding the rail, unable to figure out how to sit back down — and crying because they are stuck, not because they are awake. Fix it by day: practice lowering from standing on the floor, at the couch, at the crib rail during play. At night, lie them back down once, calmly, and leave; repeated lay-downs turn into a game. Within a week or two of daytime practice, most babies sit themselves down and go back to sleep without calling.
Regression or transition?
Because the 3→2 nap transition often overlaps, it can be hard to tell which is which. A rough test: if the third nap is the one being refused and the first two are fine, it is the transition — follow the transition plan. If the first or second nap is falling apart too, and nights are worse, it is the regression — hold three naps (or two, if already there) and wait it out. Trying to change the schedule during the regression is how a two-week problem becomes a two-month one.
A sample day
A typical day at 8–10 months
Sample days assume a 7:00 AM wake-up. Customize for your baby's wake time →
Transitions are messy.
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