I think at that age my boy would typically eat every three hours, but would sometimes go 5 or six, and he'd sleep most of the night. He'll let you know when he's hungry.

Sometimes my daughter goes 4 hours. If he needs to eat he will tell you. He won't let himself go hungry and if you force feed him then he might get to a point where he can't tell if he's hungry cause you're always feeding him

It just seems like such along time for him not to eat

I would say don't feed him unless he's hungry. If he's fine and not fussy or anything then he doesn't need to eat