DD, nearly 5 months, has never liked being in her cot. She's preferred to sleep next to me since she was born. (The hospital nurses suggested safer ways of arranging that, and all the websites about safe cosleeping, etc etc, yes I know it's not ideally safe, but neither is a mummy who's suicidal from sleep deprivation.)
I got her into a cot at about 3.5 months and she slept for two three-hour stretches, plus a bunch of shorter stretches, per night.
Then at 4.5 months she started waking every 45 minutes. Ho hum, 4-month sleep regression, I thought, and took her back into bed with me because sleep deprivation was doing bad things to my mental health.
And in bed with me she sleeps 5 hours, and then 3 hours and then 2 and 2, punctuated with feeds, and it's marvellous. Comparatively.
So I tried to transition her back into the cot, and she wakes up every 45 minutes. She goes back to sleep with shush-pat and feeds if shush-pat doesn't work. She's got a swaddle, she's got a knitted sleep sack, I don't think she's too hot, maybe she's too cold? maybe she's just pissed off? am I just being unreasonable thinking she could replicate this 5-hour thing in the cot? Should I stick it out? I gave it 3 nights and then caved because lack of sleep was doing bad things to my head again. Aaarrggghhh. Halp plz...