Well worth a watch, it explains the what and the why. 96 hours likely isn’t long enough to run into refeeding issues but you can never be too careful. https://youtu.be/h3L_118IIgE
I had refeeding issues after a 36 hour fast, so I’d say follow the protocols. Start with a cup of broth, at that time take enzymes, probiotics and yes still electrolytes, take vitamin B1, maybe eat an egg and then wait an hour. Absolutely no carbs or sugars.
It is really important. I once broke 70+ hr. fast with greasy, not too healthy processed food items that annoyed the hell out of me the next few days.
I had problems with focusing, staying clean and alert and be in a stable mood, and generally being alright.
Get something that’s healthy, pretty neutral, not offensive to the stomach.