Try the Cat Attract as soon as you can. Most people recommend cleaning the tray once a day, and putting in all fresh litter once a week. When you can switch to clumping litter, you can usually wait a couple of weeks before you need to start fresh, but you still need to scoop daily. If the litter gets stinky, even when it’s scooped, it’s time to change it.
The idea of putting a cat in a small area (like the bathroom) is so he won’t go wandering off and find hiding places for his little jobs. It does work, but not always. You always want to be careful not to have the litter tray too close to his food and water – cats don’t like eating in the bathroom anymore than a human would.
Also remember that the little guy is just a baby. It takes a little while and a bit of patience to toilet-train them. Think of how long it takes to toilet-train a human.
Putting him in the tray when he wakes up, after he’s eaten and after a play session is an excellent way to help train him.
Obviously if you see him start to squat elsewhere you’ll want to pick him up and rush him to the tray. But you don’t want anyone to yell at him or he will start associating elimination with anger. Then he will just go hid to poop.
If you have an area, like a bathroom or kitchen, where he can be confined when you aren’t with him, that’s fine to do. He doesn’t need the run of the house while he’s little and may even be safer in a smaller area when you are at work/school/whatever.