You are what you eat.
It'll be hard to subside the "craving of hunger" if you were used to getting a full feeling in the past. But if i were you, I would fast for a day with tons of liquids (mainly healthy water), and then switch to a low amount of super-foods (honey, goji, spiroulina, etc.) but still at a small amount.
Come a week, if you meditate, you'll start to notice some things.