J.L.
Maybe he isn't into the nap thing. I stopped taking naps at the young age of 6 months, i just went to bed earlier so my Mom said. My son stopped at age 2, my middle child stopped at 10 months, and my youngest stopped taking naps at the age of 2. All kids stop at a certain time, I feel you just need to deal with the new change.i honestly don't believe in forcing a child to nap even if they look tired. They will eventually run out of batteries,and fall to sleepin the evening. Good Luck.