My 5 week old is doing well on the breast but we really want to give her an expressed feed maybe once a day - any views on whether we use a bottle or one of the slanty cups? Also which feed is it a good idea to get dh to give - the 10pm ish one makes sense as I could sleep....my other worry is how much to defrost to give her as I don't really know how much she takes at each feed. HV has suggested 4 - 5 oz - is this other people's experience?