Hi, I can help you with your question today.
You are correct to think about changing his medication protocol!
We always want to give the least amount of medication possible to maintain his comfort level.
Metacam in cats always makes me a little nervous about renal function as well.
I would like to see Stripes on a joint supplement like Cosequin, which can be mixed with his food once daily.
It comes in capsules which you break open over his food.
Another option would be injections of Adequan.
I would like to start by reducing his medication to every other day dosing.
I would wait about 1-2 weeks before determining if he is still doing well.
If so, I would try to go down to every third day on the Metacam.
Please let me know if you have further questions.
I am happy to continue until I provide the service that you seek.