re: #200 Stanley Sea
Sorry to say this, but you should have done two. As you are now discovering, one cat will consistently demand your attention. Having two from the same litter will mean they will play and groom each other before they start to annoy you.
If you’re staiyng on top of keeping the litterbox, another cat isn’t that big of an issue, although ideally you should have a 1:1 ratio of litterboxes per cat (preferably out of the way where the cat won’t get spooked when it does its business.)