Drink lots of water. It fulfilled the tick of wanting something to eat for me and nourishes your body. 
Wean your body into it (smaller, cleaner portions). 
Plan on cleaning up your long term diet post fast - I found it was a nice reset to have a hard “no thanks” on certain foods I’d waver and eat sometimes before hand. Your body will respond positively to the improvement.
Don’t plan on being stupid active throughout the fast (especially near the end) - my energy dropped a ton mid work week and I was awful 😂


Am not a pro - just what I’ve found thus far (pros - if I’m wrong or should clarify, fee free to correct me).