Now that I am past the half-way point (75 pounds lost, 50 to go), I find I must do at least 3 days of fasting to lose weight. Keto, OMAD, and even alternate day fasting have stopped working for weight loss at this point. I need to do this once a week (maybe I'll do fat fasting one week) and stay ketogenic the rest of the time to even lose one pound. It's not easy going right now, but I plan on slogging through until I finish the weight-loss stage sometime this year.
But don't get discouraged with my story: I'm a post-menopausal, hypothyroid, woman who has been morbidly obese almost all her adult life. I've been on every diet imaginable, and have a deranged metabolism that isn't going to be fixed overnight.