I just realized that I will have to throw out my entire stash of frozen milk because of the move. I don't have a huge stash, especially since a bunch of it was from when I was having dairy. But it can't stay frozen on a 3-4 day car trip. I would want to keep just a few bags because T will start solids when we get to CO and I won't have any BM to thin stuff out. Is shipping it in dry ice crazy expensive?