How do you know when its time to go down to one nap?  My little one is 15 mo old and she naps maybe an hour in the morning, and then the afternoon is 1 1/2 hrs or 2.   If you do go with one nap, what time of the day are you doing it?  Just curious.  She's starting to wake up earlier every morning even if we put her down later... she's loaded with energy!                
                             
        
Re: Time for one Nap?
Our daycare did the transition for us. She still took 2 naps on the weekends for me for about a month after they transitioned, then it kind of went down to their schedule.
She wakes about 6:30 (sometimes sleeps till 7). Eats lunch around 11:15-11:30, then goes down for her nap around 11:30-11:45. She'll sleep until 1:30-2:15 (never know how long it will be!). She goes to bed between 7 and 7:30.