What to do with frozen milk?

li

My 2 month baby girl absolutely refuses a bottle, I have tried everything every trick, every bottle and nipple I could possibly think of and yet she prefers to starve than suck from a plastic nipple 😂 anyway I have around 700 oz so far pumped and I dont want to let it go to waste. What can I do with all the milk I have and that I have to pump still? I pump on average 20 oz a day because of engorgement I need to pump and its quickly piling up (I don't want to donate it, its mine! Lol) Any ideas?