TillyTrotter
Royal Canin senior for our little 14 yr old cat.
To encourage her to keep hydrated we place glasses of water in various rooms and she likes to climb up to coffee tables to drink from them. I found this out when she helped herself to my glass of water one day!
Our cat rarely drinks from his fountain but, like your cat, steals a glass of water. I have water next to my bed and if I put a tissue over it, he just removes the tissue.
One very hot day, I was concerned about him so put a plastic 'glass' on the table in the garden and he had a good drink.