I don't think cyclical fasting is really necessary for type 2s who still produce insulin except in the sense of losing weight.
I'm a type 1 and have tried this and it's remarkably easy.
The main difference between this and normal ketogenic LCHF is the amount of calories per day and the fact that it's low protein. So basically, just eat vegetarian for five days a month. The ideal food is actually just 1-2 avocados a day (both in macronutrients and overall calories), although for support I prefer something hot like an onion soup (no croutons or cheese though).
I've done Longo's pseudo-fasting on and off a few times now and will do a c-peptide after two more cycles, maybe in a month or so. I have a requisition form to check that in my hand, when I'm ready. My last c-peptide was taken two years ago so I'm curious what it is now. I feel great during FMD (fasting mimicking diet) and good for a few days after, but there are a few side effects which are transient like feeling a little numbness or headaches (probably from switching into ketosis).
Feel free to ask me any questions. My goal is to basically starve and then rebuild my beta cell population little by little. If this indeed works but I think the science is sound. If you literally starve your internal organs shrink too, and the first cells which are killed via autophagy are stressed or damaged cells, making more space for new, healthy islets / beta cells to take their place once you eat again.
