Help Sunny Recover from Medical Emergency

Hello, I'm a 19-year-old girl going into the Air Force. My cat Sunny had an unexpected medical emergency. He had the worst case of a UTI that male cats can have and had to undergo a procedure since his urethra was fully blocked off and wouldn't allow any pee to pass through.

We found him as a stray with his ear clipped 3 years ago and took him in. Anything would help, even if you can't donate, sharing around is great!