I've gone through many of the same things, up to the point where I had to beg my father to remove some of the stones because it was uncomfortable that the toile

I've gone through many of the same things, up to the point where I had to beg my father to remove some of the stones because it was uncomfortable that the toilet wouldn't actually flush. I think that one-time-actions like these are easier to do without constant feedback. Somebody measures it, explains the savings to you, you do it once, done. Usage-based savings likely require more frequent feedback unless you're somebody that has a very fine-tuned habit system.