I'm looking for help with my two week old baby, who was born five weeks early (not sure if that is relevant). She has started to spit up after a feed (formula fed), which to me means she is full & should stop feeding. She falls asleep in our arms but when we put her down in her cot she acts like shes hungry again. Sometimes she takes a good amount if we try again other times she won’t even look at the bottle. Should we keep trying to feed her? It also only seems to happen in the evening & during the night. Any help would be appreciated, new to this whole having a baby thing