Various reasons for a snake to push with their nose: trying to shed, or debris stuck in nose or mouth, or wanting out of a cage (for food or better temps.).
Your BP is fairly active...he doesn't appear to me to be snake with an RI...his restlessness is most likely hunger or shedding.

Most start their BPs on hoppers- fuzzies are a bit small for hatchling BPs. Your snake is probably hungry.