Help with sleep PLEASE

Sa

My son is REFUSING his naps now. Can someone help me get to the bottom of this?

This is his schedule:

6am wake up (wakes up tired and crying)

8am first nap (1-1.5h)

11-11:30am second nap (1-1.5h)

3-3:30 third nap (30min)

Asleep by 7pm

2-3am feeding