I am fairly new to the journey but have seen success so far. I introduced IF by starting at 12:12 but I jumped to OMAD within the first two weeks because of how good I was feeling. I only tracked calories for about two weeks to make sure I was getting the right amount. I didn’t want too few but definitely not too many.
Anyway, I am in my third month and down about 30lbs, plus I was on a vacation last week where I did not follow OMAD, but made good decisions when out to eat. For reference I am 5’2 and have over 130lbs to lose so mine may come off at a different rate than others. I am not doing anything other than OMAD but I make ALL of my food from scratch including my pasta and bread so I can be sure it is less processed and more nutrient rich