Year-old corn snake

[Bogertophis]

Is it normal that he's been staying in his hide and not coming out at all?

Yes, he's in a new home & he's afraid...he has no idea why or how the world as he knew it just changed completely. Also, most of our snakes lay low & hide most of the
time anyway...in fact, all of my corn snakes are currently in their hides snoozing too, & they've been here for a decade...so it's normal. Snakes in the wild don't wander
around looking at the scenery, it only increases their risk from predators. If out & about, they're either hunting food, a mate, or a new hiding place if something happens
to their "go-to" place. My corns get more active in the evenings & when I walk by their enclosures, they're usually hoping it's feeding day (unless they're in shed).