As I recall, I thought that if baby hadn;t finished milk it had to be discarded after an hour as it had made contact with saliva. But, just looked on kellymom which says: "If baby does not finish milk at one feeding, it may be refrigerated and offered at the next feeding before it is discarded."
So, if I warm up milk to give to baby and she doesn't take it all and I put in fridge, can I warm again?
I'm looking after sister's 4 month DD tomorrow so don't want to poison her with my ignorance.