Do her diapering products run small or large.. or average? My son is 3 months old.. weighs 19 lbs ..needs a 15-16 inch rise on his diapers..and has a 16 inch waist. I've got some larges on the way.. I am assuming that it will be a while before he can wear them.. her website states the larges start at 22 lbs.. but I know this is just a general guideline.. so will Caden be able to wear these soon... or will it be a good while ? Thanks!