I think it’s just not for everyone. I did it for a bit, and it never really worked for me. The most extreme one I did was “no food on monday” which was really hard and made me feel like shit. Then on tuesday I would overeat as my first meal and feel like I was going to die.

What seemed to work more was to delay meals and wait until I was actually hungry to eat. Also never finishing my plate (which is super hard as I was raised to finish a plate) works quite well. Also going to sleep hungry works well. That’s how I work.