I use a pail to collect water and then pour it on him with food

I use a pail to collect water and then pour it on him with a clean food container.
The shower head is also too high at my bathroom. He still love to have water on the bath tub so I would collect some water on the bathtub as well.

For a while, he really like to take bath but I don't want to waste a lot of water. I used a large plastic container to collect and let him sit inside.