Hello, we have an 8month old female great dane. Who has had alot of food allergies. We finally found a food that doesn't give her hives and doesn't dry her coat out. We are feeding here Natural balance duck and potato, which is what her vet has put her on. The problem is she has not been wanting to eat it now. She did good on it for about the first month but now she turns her nose up at it. Please help with this problem. She is our baby and we hate not seeing her eat.