Anytime my baby poops, I try to make sure she's done before I change her. Sometimes, it'll only be a little & she won't go anymore after I decide to let her finish. I guess I should change her even if it's only a little, although, I don't like wasting diapers. She goes through them lol. I don't like keeping her in a dirty diaper for too long, I don't want her to get a rash.