I always go with 3 days in the fridge but you can go 4 safely

I always try to keep it under 6 days, if I know I’m not gonna use it then I’ll freeze it at 3 days. I’ve kept it up to a week with it being fine and other times it was spoiled at a week. Breastmilk changes daily so it depends on the milk. I always do a sniff test to be sure.

You can just go by the 5-5-5 rule. Easy to remember.

5 hours at room temp.

5 days in the fridge.

5 months in the freezer.

Also you can keep breast milk up to a year in a deep freezer.

24 hours is what I've been told by a LC and what I follow by.

In the fridge I believe it’s 3 days