Super hyper kiddo

My son just turned 3. He is SUPER HYPER when we lay down for bed and I don’t understand why! I feed and bathe him before we lay down and BAM! He gets so freaking hyper. I don’t know how to keep him calm. He doesn’t listen when I tell him to lay down or even when I turn the tv off. He literally jumps around, playing and screaming and just being hyper. Advice?

Yes, we even play outside during the day, I don’t give him any sweets or anything to drink (other than water) after 5.