Please help me 😩

I’m going crazy!! I need help guys. My kid is acting like he wants to drop his 3rd nap. He’s fighting it like crazy. I don’t know how to help him transition though. He wakes up at like 6 am and can make it until 8:30 at the latest. He will sleep for an hour. For his second nap, the absolute longest he can go is a little over 3 hours. So 12:30-1. He will sleep for an hour to an hour and a half.

He gets tired again in 3 hours at the latest. That puts him going to bed at 6!! My husband wants to see him when he gets home from work! And the times I’ve put him down at 6, he’s up at 5 am!!! Help!!!