We've just started giving my 4week old an occasional bottle so that I could get a little more sleep anfpd try and encourage milk supply (I'm having problems expressing enough for extra feeds). Weirdly, and contrary to e erything I've heard she takes the bottle (eventually) then just won't sleep. She settles relatively quickly after breastmilk but mpnot after formula. She didn't go down till 3am last night after a bottle feed at 10, by which time I had to BF again to get her to sleep as she was so exhausted. Anyone experience this? We used hipp organic extra hungry if it has anything to do with the brand of milk.