Cats are pretty easy going and fine to leave for hours. My guy was a rescue and been though repeated cycles of ending up in the shelter. There have been times when I was too depressed to care much and didn’t change out his litter box regularly for weeks! But trooper that he is he continued to use it. He wasn’t happy that he wasn’t getting his wet food regularly and was really worried but he came though it in spades. Is he happier when I’m stable, sure. But he is a trooper and I’m sure your guy is too. Just be sure to provide him with lots of toys and distraction for when your gone.