He will. Don't focus so much on him. Not settling because more than likely he is or will once you leave.. They usually start playing or stimulated very easy by the distractions surrounding them. He isn't in any pain or harm. Just keep telling yourself that daily.

Thank you @starting_over39, I hope he settles in soon.

Always say bye she you leave.. Don't sneak away.. It's better he gets use to you leaving and coming back. He'll get into the routine sooner than you think. He's young a like a sponge soaking it all up. Now my nearly two year days bye bye and closes the door.. She knows we'll be back and gives a great sense of security. Good luck