r/sleeptrain•
onemanspants

CIO is magic! This is insane!

4 - 6 months

I posted here last week about how I was feeling nervous to sleep train my 4-month old, but we took the plunge and so far it seems to be working incredibly well!

Her sleep before sleep training was pretty rough. She was dependent on the pacifier, and it was taking us 20 minutes of rocking with the pacifier to get her to sleep. She would often wake up on the transfer requiring another round of soothing. We'd often get several false starts at bedtime, requiring one of us to go put her pacifier back in, or rock her back to sleep. Overnight, she would have one 2-3 hour stretch, and then wake up every 1-2 hours wanting her pacifier.

Last night, after a frustrating 25 minutes of rocking/pacifier while she screamed, we decided to pull the trigger and do CIO.

Night 1: She cried for 8 minutes continuously, then off/on for another 10 minutes. She then fell asleep until 10pm when I did a dreamfeed, and then she slept to 2am when I woke her to feed (her weight gain is on the low side so we are feeding overnight). She then went right back to sleep and slept until 5am when I woke her to feed again. Then back to sleep until 6:45am!

She was SO happy this morning, in a better mood than we've seen her in the past couple of weeks.

I'm now writing this during her first nap of the day. I decided to give her a chance to put herself to sleep for the nap as well. She cried for 7 minutes then fell asleep! Magic!!

Hopefully it continues to go well tonight!

Posted Mar 5, 2026, 4:47 PM UTC

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