My kitten Stewie is about 12 weeks old and we adopted him when he was 5 weeks old. We started feeding him Science Diet (dry) when we got him and unfortunately he started getting Urinary Tract Infections. After his second one we decided to change his food to Innuva EVO (dry). We slowly mixed in a little bit gradually with his old food for about a week. The UTI cleared up but now he doesn't seem as eager to eat at feeding time. He used to finish all of his food in a matter of a few minutes, he loved his food. Now that we are feeding him purely EVO he doesn't even touch it at first and usually eats it as the day goes on as opposed to right away. Is this bad? Also, he poops a lot more than he used to and it smells extremely bad. We just all of his immunizations about two weeks ago so i don't think it is a parasite so is it just because of the food?