I switched to this habit as well and reduced my meals to only 2 per day. I also learned to not fill up to the brim by waiting to see if I'm really hungry. Another habit that I adopted is chewing my food thoroughly.
I've been trying to work on that. For better digestion and slower speed. For some reason, I've always been a fast eater and I'll end up eating more than is needed because I was faster than my body's feedback loop.