Getting Out of Cosleeping at 6 Months
You set up the crib today. It's right there. She's asleep on your chest and you're afraid to breathe wrong.
You want to move her. You know she'll wake the second she leaves your body. You've tried. You'll try again tonight. Same result.
This is the part nobody explains: the problem isn't the crib. The problem is that nursing - or the memory of nursing, even on formula now - is how she crosses the line from awake into asleep. Move her before that transition is complete, and you're not moving a sleeping baby. You're moving a baby who is still actively using you to sleep.
That's the actual barrier. Not willpower, not the right method, not whether you use cry-it-out or not. The feed-to-sleep association.
What's happening neurologically (briefly)
At 6 months, babies cycle through light sleep about every 45 minutes. When she surfaces between cycles, she looks for whatever put her to sleep. If that was your breast, your smell, your warmth - she needs that again to go back under. The NHS guidance on baby sleep puts it plainly: babies who fall asleep independently at the start of the night are more likely to settle themselves when they wake between cycles.
That's the target. Not "teaching her the crib." Teaching her that she can cross into sleep without you as the bridge.
The sequence that actually works
Start with bedtime, not overnight. Trying to fix 3am while also moving her to the crib is two problems at once. Pick one. Bedtime is easier because everyone is less desperate.
Feed her earlier in the routine. Not right before she goes down - ten to fifteen minutes before. Still fed, still full, still calm. Then do whatever comes next: a song, a dim room, a specific phrase you'll use every night. Then put her down awake. Not wide awake. Drowsy is fine. But awake enough that she's aware she's going into the crib, not waking up in it.
She will probably cry. The question is not whether to tolerate crying, it's how much, and what kind. Fussing that ebbs and flows is different from escalating distress. You get to decide where your line is. The AAP's guidance on infant sleep acknowledges a range of approaches - what matters is consistency, not which exact method you choose.
On the nursing-for-comfort piece
If she's mostly on formula now but still nursing to sleep, you're not dealing with hunger. You're dealing with comfort and habit - which is harder in some ways, because it's not a need you can redirect easily.
La Leche League is honest about this: nursing to sleep is normal, biological, and genuinely soothing. It is also, if you want to change it, something you have to actively unwire. You cannot sneak around it. You have to be present for the protest.
The gentler version: nurse to calm, not to sleep. Same feed, same closeness, but you interrupt before she's fully under. Break the latch. Wait a minute. Put her down. She'll object. That's the work.
Moving her to the crib
Once she's going down drowsy-but-awake at bedtime even a few times, the crib is less foreign. That's when you move her at the start of the night and hold the line. If you're tracking feeds - TandemBaby or a notes app or just a scrap of paper - you'll start to see which wakings are hunger and which are habit. They feel identical at 2am. Over a few nights, they're not.
The first three nights are the worst. Night four is usually meaningfully better. Not fixed, but better.
One thing to accept
She will cry some. The goal is not zero crying. The goal is a version of this that you can actually sustain, in a bed where you can actually sleep, without resenting her by morning.
You've been awake for six months. You are allowed to want this.
Sources
- NHS — Helping Your Baby to Sleep — NHS guidance on normal infant sleep patterns and how independent sleep onset affects night waking.
- AAP Baby Sleep Hub — AAP overview of infant sleep, night waking, and approaches to helping babies learn to settle.
- La Leche League Breastfeeding Info — La Leche League information on nursing to sleep and the comfort nursing relationship.