Could it be that DS just is an early riser and likes his 10.5 hr nightime sleep?
He is not that far off the averages @ 12months
night - 11 1/4
naps - 2 1/2 (2 naps)
total = 13 3/4
Is nap lenghts are great, perfect in fact! I would aim for nap about 5.5-6.5hr after waking if he can take it...this is what my LO does. It may take time to get there. I know some mom's give 1/2 lunch before nap and 1/2 after, so 11.30 and 2.00 in your case would be great.
You are doubting yourself, but everything you are doing sounds great! Keep up the good work and let us know how you get on.