Reverting Back to 2 Naps

Lilly

Has anyones little one gone from one nap back to two? My son usually naps from 12 - 2 but has been so tried lately I've been putting him down for a morning nap (usually sleeps for an hour) and then around 1 or 2 (sleeps 1.5 - 2 hours). It's just not like him to be this tired. Has anyone else gone through this? Am I worrying for nothing?