I had a somewhat similar experience. Joey had a seizure which I correlate to taking Simparica. He looked terrible so took him to the vet when the first seizure happened and he was late Stage 2. Put him on Royal Canin kidney kibble and Hills kidney wet food and 4 years later he has only had 1 more seizure and his kidney values have remained constant. I will believe your homemade version is most likely better if you have the correct proportions. All the best to your Bs! Joey will be 15 in November.