DS just turned 2 last month, been refusing to have an afternoon nap (normally 1.5 hours). He only sleeps 10.5 hours at night and when he wakes up he just wants to play. These few days he gets so tired near dinner time that he is half asleep and doesn't want to eat. Is it normal? I am pregnant (v. tired) and would ideally like to nap with him. Advice please.