I forgot to mention the other interesting piece of this for us. DS would NOT nap, and has not for almost two years. Now that he is sleeping about 1.5 hours a night, he is more likely to nap as well, if only for 20 minutes. It usually happens in the car, and I know it would never happen at home. I just think it is interesting that even after 12 good hours, he can still use a little down time in the middle of the afternoon.