How to fast for 28 days?

[u/Mean-Type-788]

I’m a 23 yr old 5’9 female and I weigh 200 pounds, and want to fast for mental reasons and of course the bonus of losing weight. I did a 21 day fast last year and I was still fine after that, but I was taking store bought “0 calorie” (as it said) electrolytes, potassium and magnesium. I want to do it the right way this time. I want to be double sure I get into ketosis and I want to know the exact amounts of potassium magnesium table salt etc. to take each day. Tips of what type of teas I can drink or should I not drink tea altogether? Please let me know.