I know I asked about combining recently pumped milk with cold milk that has been in the fridge and that is a no no.
What about room temperature milk with freshly pumped milk? The fresh one is usually warmer than the room temperature one, is this still okay? Or a no?
I kind of do this when I pump for my freezer stash. I usually get about 3 ounces, and top it off to 5 ounces an hour or two later. I figure it's not stone cold and the whole bag goes right in the freezer afterwards.