Is my rabbit going to be ok?

I have a bunny. He is probably settling in. Give him some fresh food and toys and leave hime alone. If this persists after he has settled in to his new home, see a vet. Not eating regularly is NOT a good sign. Even if he gets better,go to a vet. Whenever you get a new pet you should have them checked out. And give him Petromalt. He might have a hairball, and rabbits can't digest them like cats can. Also, he might just miss his friend (rabbits are very sociable). Later, you can take him to visit.