I thought we were dropping to 1 nap at one stage, but we're back to 2. hehe. He tends to have a lunch time nap for about an hr, anywhere between 11am and 1pm. He then has a nap around 4 or 5 for about 40mins (altho he didn't want to sleep this arvo - so only one nap today!) But he has a night bedtime around 9.30/10pm so these naps work for us. If I were to put him to bed at 7 or 8, he'd treat it as a 40min nap and then be up until midnight! He's kinda slipped into this routine on his own, and it works for us. Basically if he's tired I let him sleep. I wouldn't worry about how many naps per day unless it's affecting his night sleeping too much.