D.G.
I have 4 kids, and each child was closer to 18 months when the early morning nap really was gone. You have to just see what he needs. Pretty soon, you will start seeing one nap get shorter, or the afternoon nap get delayed b/c he's not tired. Then you'll know that the morning nap and afternoon nap need to be consolidated into one longer nap in between the two times, say start it at 10:30 for a couple weeks/month, and then move it to 11, then 11:30, so on, until it is at the time that works for you lil guy and you. Right when you do drop to 1 nap, you may find that you need to put him down for bed at night extremely early (like 6 or 6:30) - that's okay (at least my kids slept 13 hours those nights)
This is always a tricky period, b/c there is for sure a gray zone when he's too tired for 1 nap, but 2 naps is too much for him. You'll start seeing some signs that he's ready to drop down to one. Good luck.