Same. I toughed it out for almost 6 months because your body is supposed to adjust but mine never did. I was doing 12-8 and some days I was so hungry I would start getting blurry vision by 11am. Didn't lose an ounce either.
It’s fascinating how different peoples’ bodies are. Maybe try a slight variation? My father in law has been restricting his food intake to 600 calories per day a few days a week for years, and it’s done wonders for him. The exact numbers might not matter; 700 calories twice a week may be better for you, for example. I’m just thinking this might be good for you if you need some constant (but low) calorie intake.