Diaper Sizing

Nicole • momma to an angel & a baby boy 👼🏻💙

How do you know when to size up on diapers? My baby boy is still wearing newborn, and they still seem to be kind of big on him. He’s 6 weeks, and 8 pounds 10 ounced. The box says size 1 fits 8 pounds, so should I put him in size 1 diapers now?