8 Month Old Schedule!

ashbash4 • Mommy to Carl and Cora; LOVE THE LIFE YOU LIVE; fuck what anyone says
My son was always on a strict schedule, almost down within the hour I could predict what he was gonna do. Well he has now changed and is staying up later and sleeping in longer in the morning. He just got his 2 bottom teeth and crawls (about 3 weeks now).. so is that normal for him to change his own schedule? Could it be due to the teething or crawling ?