We've finally transitioned to one nap per day! It only took 15 1/2 months to get there. Most children transition to one nap between 12-15 months. Just like walking, Henry decided to catch the later train. Although, that was A-OK with me. I kept waiting for the "signs" that he was ready to drop his nap: inconsistent napping; playing during nap time; crying during naptime; avoidance of the crib at nap time; etc. But every time he exhibited those behaviors he wasn't able to last two consecutive days on one nap. I kept asking other moms how they transitioned to one nap. They would either say "she just did it on her own," or "the nap transition was really hard and took a month." I decided to wait and hope he would "do it on his own." I think my patience paid off.
Once we moved, I started putting him down for a 10:30 nap. He would sleep until 12:30, and then stay up for the rest of the day. This schedule worked just fine for him, although I had to move his bedtime earlier (7 instead of 7:30). Then I started gradually moving his nap time later over the next month. For a while I thought he would permanently go down for his nap around 11 and sleep for about 2 hours, but now he goes down for his nap around 12 and sleeps for about 3 hours.
Life these days is definitely less consistent, but he's learning so much so quickly. He learned to say "pls" this weekend - thanks to his Aunt, Uncle and 3 cousins! Sounds like "pease."