Is the milk I collect in my Milkies Milksaver good for use of bottles? I have been reading about foremilk/hindmilk imbalances and it makes me wonder if the milk I collect (about an ounce every feed, which I don't want to waste) is balanced enough. It does separate in the fridge, with a thin layer of what looks like fattier milk on the top. I appreciate any input on the matter!!