Earlier quoted context omitted.
So drinking more water would be enough?
This isn't my area of expertise at all. A personal experience that comes to mind is when my childhood cat developed kidney disease. She drank plenty of water, urinated excessively, and her blood still became toxic without regular (~daily) intervention in the form of adding saline to her blood intravenously. Like a light switch she'd resume normal life after the saline bag emptied into her blood, then slowly become il…
Excessively drinking water, excessive urination, and renal failure are all co-morbidities for cats. Either way, kudos for helping them.