What's an optimal strategy for storing pumped breast milk for using feeding "emergencies" (mom needs to leave the house for a few hours)? Ideally it would be FIFO but it seems like a waste to dump milk off the end of the queue every day. Obviously we could just feed a bottle to him once a day but my wife wants to minimize bottle time.
Another strategy would be to pump once a week or more as needed but that doesn't allow for much depth in the queue.
I feel like what we really want is to freeze a lot of milk, but without microwaving I imagine that it would take a long time to warm up the milk.
What would be a good strategy? Or am I over-thinking this problem?