Hi Tammy,
I posted on a similar thread yesterday, as DD (28 mos.) doesn't fall asleep for her nap until 1:45. I've been waking her at 2:45 and doing bedtime between 7:30 and 7:45. It's been working well for us so far. I would maybe let him sleep from 2-3 as pp suggested and try bedtime sometime between 7:30 and 8:00 to see how it goes. What is his usual bedtime (with the 1.5 hr. naps)?