Size 1 says up to 20 pounds. DS is right around 12....how accurate is their sizing? Should I wait until he can fit the 2's? Also, how's the absorbancy on these?

BFP #1 11/28/09 ~ EDD 8/6/10 ~ DS Born 8/9/10
BFP #2 8/27/13 ~ EDD 5/8/14 ~ Natural MC 9/18/13 at 6 weeks, 6 days
BFP#3 3/28/14 ~ EDD 12/7/14 ~ DD Born 11/21/14
BFP#4 6/15/17 ~ EDD 2/20/18
Re: Applecheeks....size 1 or 2?
I'll be using AppleCheeks as well. I've heard of a lot of babies who fit in size 1 beyond 20lbs, but it depends on their build and if they have really chunky thighs. I haven't used them yet so I can't comment on the absorbency yet but have a number of friends who use them and think they're great.
I should know more in just a few weeks!