Have you tried taking medium chain triglycerides or drinking real coconut milk alone while otherwise fasting? It will make you warm, generate heat and ketones, and burn evenly for many hours. Not a true fast, but it sure sets up the environment for some solid ketosis from what I understand.
Steak, eggs, potatoes - fruits, nuts, berries and forage. Coconut milk and potent herbs and spices. Tea instead of coffee now and teeny amounts of kelp daily. Let's see how this does! Not really had dairy much, and gut seems better for it.