Thanks to four months of prednisone Austin now has colitis. He hasn't vomitted since last week, but is still having runny poops. He's been on chicken and rice for about 10 days now. I can't feed him canned food because it doesn't agree with him, and he won't go near his kibble anymore, even if I try to mix a little with his c&r. I'm also giving him pepcid. So my question is can I boil up some potatoes and mix that in, too? I worry because he's not eating dog food that he's not getting everything he needs. I'm at a loss here!