Diaper shopping?

M

This is my first and I have no idea! Any tips/help would be appreciated..

Do you wait to shop for diapers after baby is born? I have a few freebies from the welcome boxes and then whatever I guess the hospital will provide. I just have no idea what you’re supposed to do and if I should wait to see what baby will fit/tolerate, etc.

Should I just buy one box of Size 1 and then see what baby likes or go ham?

Almost 27 weeks. I know I have some time but still