DD (18 weeks) was introduced to the bottle at 2 weeks and for a period of around 4 weeks was almost exclusively bottle fed. I managed to get back to bfing once she stopped falling asleep after two sucks but kept one bottle of ebm / occasionally ff a day at the dream feed. She also had the occasional bottle during the day when I was in a situation where it wouldn't be easy to get my boobs out or on the odd time when I was having a crisis of confidence with supply. She always seemed happy to go between boob and bottle and didn't seem to care if it was ebm or ff. However, over last few weeks she's been taking less and less at her dream feed (and subsequently sleeping less well but that's another thread). She either just keeps her mouth open and refuses to suck or really fussed until she eventually wakes me up and I end up bfing. The last few bottles I've tried during the day she has only managed 1-2 oz and the rest has ended up down the sink 
. I'm starting to get worried now as I am going to be away for a couple of days just before she is 6 months and go back to work at 8 months. I'm so surprised by this as she has always had a bottle and really don't know what to do. Anyone had experience of this? TIA