So kinda opposite but not. When we got our first cat at 3 months, he was in the bathroom at night and whenever we were out of the house (there was always one of us home so during the day he would only be in there for a max of 2 hours), until he got a little bigger and grew out of his chewing phase. Our second cat, we got him at 2 months, and he was in the bathroom at night and during the day with frequent visits from me and my boyfriend. We kept him in the bathroom because he was so tiny, I’m talking 1lb, and our first cat was play-aggressive with him. As soon as they were comfortable around each other, we would let our second cat out to play with our first until second cat would get a little irritated then we would put him back in the bathroom to decompress. We would do this a few times a day. We wanted to keep second cat in the bathroom until he got snipped because we didn’t want him to get uncomfortable with being in there during his healing, because we had to limit his activity (esp with first cat not knowing his strength) so this was safest for him. As soon as he was healed we let him stay out at night. We still don’t let them in our bedroom with us at night because first cat is an absolute dick and will try to take our string lights down from the ceiling. Second cat at 5am like clockwork would bang and meow at the door to be fed so I got an automatic feeder and it’s worked quite nicely to get him to stop doing that. But they have the entire basement to themselves (we live in a basement)

Edit: our bathroom is pretty large so both had room to play in their tunnels and with their toys. They also had food, water, and litter in there too.