I would like suggestions of food brands that make duck cat food – limited protein, gluten free cat food. My cat has Irritable Bowel Dysfunction. I can find only one food currently she can eat. But it is a challenge daily to get her to eat I think because I think she gets bored with the food. No chicken, turkey or beef to start with. Safest to start with duck, but other unique limited proteins may work. Ideally the suggestions could be purchased through Chewy.com or the like websites as I live in a small town. Thank you