My almost 4 month old is happy to go 3-4 hours during the day, but overnight, needs to feed every 1/2 to2 hours. I've tried having her in the same room, in her own room, co-sleeping.. To no avail.. She just needs to feed and won't settle back to sleep till she does. Most of the feeds only go for 5-10 mins, fall asleep, then she's hungry again an hour and a half later'!
We've been doing this for months now and I'm exhausted!