Update on Jax....
I decided to ease my mind more since I've barely gotten any sleep....to go see a different vet for a second opinion. My mom and I took him to a Cats Only specialist, who was very friendly and gave him a great examination. They took a blood test to see if he perhaps has...
Oops sorry I quoted your reply and hit the send button to fast. I'm currently feeding him wellness core grain free wet cat food. He seems to like it a lot but I'm going to research this brand more just in case!
I WAS feeding him Friskies surf and turf dry food and I'd give him like 1/2 can...