Waketime b/w naps at 4 weeks

Shawn

My little man is super hard at telling when he’s tired. I can only tell when he’s yawning. He’s a very alert baby so his eyes don’t really droop when he’s getting tired, only when he’s falling asleep. When I try and lay him down for a nap it can take 45+ mins and he’s really fussing and fighting it! And barely closing his eyes! He is usually awake about an hour between naps, but by the time I actually get him to sleep it’s 1hr 45 ish.

How do I know I’m not keeping him up enough or he’s overtired? How long should he be up between naps?

Also, is there a max time they should nap during they day so they sleep at night?