Ketosis and Water Fasting

I've been scrolling through the search results and didn't see anything on this, so forgive me if I missed it. I'm doing my first 3-4 day water fast. I've done 16 hour intermittent fasting with no issues, but I was curious about my salts. I use LMNT once a day with my daily vitamin and magnesium citrate supplements. That's technically 5 calories plus whatever the supplements add. Do I still continue to use the LMNT and take vitamins for the 3 or 4 day fast? Other than that, I drink green tea, black tea and coffee which I understand is fine.

That's all really. If you want to throw in advice or tips, feel welcome too lol.