Why is my 8, 9 or 10 month old suddenly waking at night?
The 8–10 month period stacks three things at once: new motor skills (crawling, pulling to stand) that get practiced in the crib, separation anxiety, and a nap transition. A baby who was sleeping independently usually returns to baseline once the response stays consistent; a baby who never slept independently often gets worse, because each new skill and fear lands on a habit that was already fragile.
What is happening
- Motor leaps. A baby who just learned to stand will stand up in the crib at 2 a.m. and may not know how to get down.
- Separation anxiety. Babies this age now understand that you exist when you leave the room, and many protest. It is a normal stage of emotional development.
- Nap transition. Naps are shifting, and a day with too little daytime sleep produces a worse night.
- Teething and illness ride along but rarely explain weeks of waking.
When all of this lands at once, many families contact Actually Sleeping. Dr. Sam writes a plan that takes the new skills, the separation anxiety and the nap shift into account, so the regression is handled without new habits forming.
What it looks like at night
Parents describe the same few patterns. A baby who used to sleep through starts waking once or twice and will not settle without being picked up. A baby who stands up in the crib and cries because they cannot get back down. A baby who protests hard the moment a parent leaves the room at bedtime. Naps get shorter or are refused, and bedtime drifts later. Any one of these is manageable. All of them together, in a baby who already needed help to fall asleep, is why so many families hit their limit at this age.
Why it lasts longer for some babies
A regression becomes a long-term problem when the response changes: night feeds return, rocking to sleep returns, or the baby moves into the parents’ bed. Each change makes sense on the night. Together they turn a few weeks into months. Babies who never learned to fall asleep on their own have nothing to return to once the stage passes.
Separation anxiety is not a reason to wait. A plan accounts for it, with a predictable routine and a response your baby learns to trust.
How Actually Sleeping gets nights back
A custom plan written for your baby, bootcamp-style coaching before the first night, daily 1:1 check-ins and naps coached until solid. It is not cry it out and not wait it out, and the plan never asks you to drop a night feed your pediatrician wants kept. The written guarantee: We guarantee that your baby will sleep 8–12 hours through the night within 14 days of consistent, correct implementation of your sleep plan. If not, you get a full refund. Families with babies this age describe it in the 10–12 month video reviews.
Book the free consultation and get a plan for the age your baby is now.
Want this fixed for your baby?
Actually Sleeping is 1:1 coaching: a sleep plan written for your baby by Dr. Sam, bootcamp-style coaching before the first night, and daily check-ins until it is working. 700+ families coached, 129 video reviews, and a written guarantee: 8–12 hours through the night within 14 days, or a full refund.
Frequently asked
How long does the 8 month sleep regression last?
It varies. For babies who already slept independently, a consistent response usually brings them back. For babies who never did, the regression often exposes a habit that does not fade on its own. A custom plan addresses both.
Should I feed my 9 month old at night during the regression?
Night feeds are your pediatrician’s decision, based on growth. Actually Sleeping never asks you to drop a feed the pediatrician wants kept; the plan works on how your baby falls asleep and resettles.
My baby stands in the crib and cries. What do I do?
It is common at this age, as new skills get practiced at night. How you respond decides whether it fades or becomes a game. A plan written for your baby, with daily check-ins, sets one consistent response.