Hi - I'm new and desperately wanting help with my Tommy. He's 4 yrs old, weighs in at 15 1/2 pounds and has loose, very smelly stools. He takes Pred every other day and eats Nutro, which is expensive but has lots of grain in it so is probably making him WORSE. I am willing to try the raw diet! Do I have to get supplements like that Feline Instincts stuff? I am such a Newbie at this. Please, if anyone has advice, I'd be so thankful!!! Tommy is a completely indoor cat, so if grass is on the diet, I'll grow him some indoors. (P.S. I've already tried other remedies such as yogurt, other meds, etc) THANKS