I have been fasting for a bit over 6 months with great results, and many gaps. If you don’t want to lose weight I really recommend doing it right on the fast day, but only for one or two days.
During my gaps I notice I put on a couple of kilos, then drop 1, then my weight does not move (to the 100g, or approx 3 ounces) for about the next fortnight (after stabilisation). Doing one fast resolves this. Two will be plenty if you blow out.

The best part of this diet isn’t actually the weight loss, it’s how much your body stabilises. It’s heaven. I can pig out hard, or eat very lightly and the next day, no movement. Not even water based! Drop down from three days. You don’t need it :).
I’ve just done a 5 week break (a little bit of stress in there) but barely ate a home cooked meal, and still my weight stabilised. You’ll be more than ok.