The Six Week Transformation Plan is not intended to be a weight loss plan, however many people have lost weight by following it. The servings sizes are suggested on the pages that showcase the outline of the Meal Plan for each stage. These pages come just before the recipes and are broken up into stages 1, 2, and 3. (ex: Stage 1 Dinner would be 4 ounces protein OR 1.5 cups of a Vibrant Veggie Dinner plus 2 cups of the side dish of your choice.
I would start with the amounts indicated for both of you then assess your appetite and weight loss, then adjust depending on those observations with either more or less food.