I remember feeling like I was going up in sizes really quickly in the beginning. I think I skipped 2-3 completely, and it seems like she has been in 3s for a relatively long time. At least a few months... We've gone through a lot of jumbo boxes. We are just transitioning from 3s to 4s right now. She's in the overlap region.
It seemed like he zipped up to size 4 pretty quickly.... but once we got into size 4s a few months ago he seemed to stay there. I don't think we've moved up in the last few months.... but sizes 1, 2, 2-3 went by in a flash.... there was one size we were only in for about one box. He just flew through them.
Re: s/o diapers, how often does LO switch sizes?
DS went like this:
Birth - size 1
2 Months - size 2
3 Months - size 2-3
4 Months - size 3
5 Months - size 4
6 Months - just bought ANOTHER box of size 4
I buy the HUGE value boxes at BRU if that makes any difference. But I'm hoping he stays in size 4 until we get through this box at least.
ETA: We had lots of size 2's leftover too. I bought a small package of 2-3, then just decided to get size 3 for the big box.