I was not able to breastfeed, but successfully pumped for 9 months and was able to stash quite a bit in the freezer as well as provide enough for my LO. Now that she is 10 months, I've stopped pumping, and we are trying to start using the freezer stash, she is refusing breastmilk and crying. Offer her a bottle of formula and she gulps it right down. What's happening with this? Is she weaning herself?