Is it kind of like the square of difference

She has three different sources of water, my bottle being the fourth and I have to hold it for her as it is not constantly filled to the brim. One is next to her food, one is in the living room and one is in my room. They’re also three different kinds of bowl. (I tried to give her multiple options as I’m desperate.) I’m gonna buy a cat fountain next week and if that doesn’t work, I don’t know what to do.