monkie, ya, it is common that bb sometime will refuse to drink milk for certain period, dun have to worry too much. What I do is to separate my boy's milk to 2 small bottles (instead of 160ml, i separate to 2 bottles with 80ml each), so if he cant finish, at least not throw away so much.
But if ur gal keep crying while drinking, u may want to check if she has oral thrush too. If so, she may crys due to paintful on her mouth & need to see doc to take oral antifungal treatment.
sunflower, I ask my boy's pd last time regarding how long the ebm can last if bb cant finish at 1 goes. And he advised that it is better to put the milk back to fridge then take out for reheat within 1 hr. He said not to put back the milk into warmer continuos cos bacteria actually grow faster in bottle if the milk is warm.
But i lazy type la, if my boy refuse to drink, I just left it on table then reheat again when he want within 1 hr. but I never keep the milk in warmer for continue heating lo.