How long can you refridgerate milk before you decide to freeze it? I pump at work and put the milk immediately in a fridge at work. Then, I bring it home. I usually then put it into our fridge here at home but sometimes then my son doesn't drink it all. He might drink three bottles but maybe not the fourth. Can I then freeze the fourth the following day? What if I pump the milk on Friday, store it Saturday and sunday in the fridge and decide to freeze it on Monday. Is that ok?