Maybe it’s time to track your progress by taking body measurements with a tape. You will still see progress even though the scale isn’t moving. Exercising will also burn more calories. So will having more muscle to maintain. That will increase your daily calorie burn and start to move the scale again, or at least shed some inches on the waistline.
I had this exact situation. I started doing more of and adf schedule and the weight immediately came off again. I do OMAD 4 days, 1 day 18/6, 1 day 36, 1 day 18/6. This is how I will stay until i hit my goal weight. Then I plan on OMAD through maintenance.
I organically plateaued at a 20-ish BMI and ~15% body fat (originally 30-ish @ ~30%) after roughly a year of only OMAD and zero physical activity up until that point. Had I not, I would have transitioned to a laxer protocol, as eating even more in a single sitting without compromising quality felt too challenging and ending up underweight wasn’t my intent. Fortunately that didn’t happen and thus, being the great lover of dull consistency that I am, I keep practicing OMAD half a year later, with the occasional TMAD thrown in whenever in legitimate need of more energy.