Newborn diaper size

Hello mommies. When did your newborn starting wearing size 1 in diapers? My baby is 8 days old and I have so many newborn diapers I would hate for them to go to waste. I got a lot of diapers for my baby shower so I want to make sure I use them all. I have about 4 small packs of newborn and a big box and a half. The rest are all size 1 and 2