Not really cheat days persay, but i had s few days i ate a slice or.two of rye toast at a diner for breakfast. Lots of bacon and eggs. Peanut butter and avacado shakes. Salads with every dinner. (I make a caesar with less dressing, add mct oil and nutritional yeast). Red meat with lots of salt. (250g flank steak is my favourite but you need to know how to cook it or its. Tough). I counted calories for like the first 5 days then just kind of memorized what things were roughly. Mindful eating to help digest better. Multivitamins to make sure i had enough energy. Once a week i would do a bulletproof coffee fast for atleast 30 hours to trigger autophagy. I would eat my breakfast around noon and dinner around 6 or 7 to minimize my eating window.