Machine wash with minimal detergent (I use half the recommended amount on nappies) No Fabric Softener Ever!! A clothes dryer is fine on low. As many pre washes as you want, but they will increase in absorbency the more you do. There is a care label on the booster, JIC you forget.

My DDs wear CT's most of the time. DD1 has it on the outer 2 snaps, and she wears size 2, and DD1 has it on the next 2 in, and she wears size 0-1. We started using cloth when she was about 7 months old I think, and most of our stash is CTs. There is a pic on the site of one on a 10 day old, and plenty of them on toddlers.

If the fit is not right for you bub, then let us know and we can figure out where the fit is not right, and I know a number of the clothie girls will know of brands that have a different fit.