C.S.
Babies will always mess with your schedules. Stop worrying... if he's healthy-- he'll be fine and sleep when he's tired.
Did you know that 80% of parents of 1 year olds think that their kid has a sleep problem? Maybe it's not really a problem- it's normal.
My kids went and are still going through phases where their sleep patterns change.
if he's growing, hitting milestones, healthy-- don't worry