Hi Marilyn,
It sure sounds like you are ready to make some changes to help Jewel out and I commend you for that. Diabetes in pets is not like that in humans and while some cats may convert to not needing insulin, almost every cat I’ve ever known starts out with getting insulin daily. Dietary changes do help to manage the condition overall and may help reduce insulin requirements but without some careful monitoring, I would not rely on diet alone to control the diabetes. Your veterinarian should be able to discuss further diet changes and monitoring at Jewel’s next appointment.
All the best to you and Jewel,
Dr. Ryan Llera