Diaper sizes

I recently had a baby sprinkle and I got a lot of diapers. I got mostly big boxes of size 1 diapers and a lot of smaller packages of newborn and then a few packages of the bigger sized diapers. This is not my first baby but it’s been a few years. I do not think that I will use all of this size 1 diapers not even sure if I will use all the newborn diapers. Should I exchange them now for bigger sizes or wait and see what I go through and try to exchange them later. I’m

Not even sure if stores allow you to do that but l might try.... has anyone done that? Also what is the size babies seem to stay in the longest? Thanks!