Congratulations on your success and improvement in BG!

There are five places you might find answers to your questions on fasting, since this forum does not support extended fasting. The IDM website (overwhelming now, hear a re-design in the works). THe Fasting Talk podcast, where Megan Ramos gives practical advice. Your question has been asked, and think heard her say to stop nutritional supplements for various reasons, or if you must, eat with a small amount of food. The "Ask an Expert" section of DietDoctor ... find a long list of answers to previous questions by Dr Fung there. And there are two very active Fung FB groups.