Try room temperature Gerber's baby food (turkey or chicken, no beef) in small amounts and cooked elbow macaroni. It's what my old vet prescribed for Puddy when I first got her because she had a sensitive tummy and it worked. She chewed on that macaroni and licked up the baby food. I kept her on it for a couple of months actually. If you try it, please let us know how she does.

Blessings,
Mary