He's loving his new food and for the first time in his life, keeping wet food down. So he's enjoying that as a treat.
He will be retested for the UTI in two weeks. I would imagine it'll be gone. And hopefully with the change in diet, he'll put on the bit of weight that he's lost.
Definitely has some fruity gas since changing his food though. I keep blaming the kids and they claim it's him anyway....