R.H.
I've heard that a baby transitions to 2 naps or goes through a complete make-over in the nap department around a year. Sounds like yours is there. My daughter used to nap around 9 but now she sleeps until 8:30 (instead of 7:00) and naps around 11 through the 'lunch hours'. I'm kind of the care-free laid back parent so I'd say if you're fighting with your kid to get them to sleep, let them back up to play... I did this with my daughter (14m) and found her laying on the floor in her nursery finally ready to nap. I picked her up and put her in her crib where she immediately fell asleep.
The first couple of days can be tough but they're adjust and get to a new normal.
However you make it work, best of luck,
R.