He might need some time to adjust to the change in routine? It's tough to say. I had one cat about your cat's age who was very social and routine oriented. After his wild adjustment period, he settled in, and he would sleep all night. I hope consistency is all you need, too, but my cat might've been a weirdo.
Another cat figured out nighttime was when humans sleep only after closing her into the other half of the house when she wouldn't let us rest.
He might need some time to adjust to the change in routine? It's tough to say. I had one cat about your cat's age who was very social and routine oriented. After his wild adjustment period, he settled in, and he would sleep all night. I hope consistency is all you need, too, but my cat might've been a weirdo.
Another cat figured out nighttime was when humans sleep only after closing her into the other half of the house when she wouldn't let us rest.