Pre-keto I used the egg fast frequently over a 2 year span, it broke stalls for me and I kept some of the weight loss off after returning to regular eating; however, over the long haul I regained the weight because I didn’t understand the science behind LC and keto.
If you like eggs give it a try. I found I did not need to follow the ridiculous rules of having to eat every few hours, eating quickly after waking, etc. I followed the FB group & they are strict, don’t talk about coloring outside the lines, but it’s worth it for the recipes. I didn’t care for boiled eggs pre egg-fast and now I luv them. I still eat a lot of eggs.
I’ve since found that Zero Carb (ZC), bacon experiment, egg fast, fat fast, and extended fasting are the only means that put my body in a weight loss mode. I lose inches on regular keto and lose pounds with fasting/restriction. I’ll add that I’m 50, extremely insulin resistant, and over 100 pounds from my goal so your n=1 could be different (e.g., YMMV). I’m on my 18th day of ZC and have dropped 13 pounds, a nice stall breaker!
Let us know how your experiment goes.