Does this seem to happen towards the end of 1 year? I can't remember when we got to 1 nap with my older son. And I know they may be different and that its probably very variable but I'd love for my second son to concentrate his sleep into one middle of the day nap. Then it would be easier to plan around and he could actually be at home for his nap. As it is, its always time to drop off/pick up his brother at preschool or go do other things. I'd love to give him a nice, uninterrupted nap at home. Have you gotten to one nap a day? When did that happen for your DC?