I have seen some reviews of his book and believe me, none of them were complimentary! One even said this "Harvey readily acknowledges he's not a nutritionist or dietitian." - given that, he should NOT be giving nutrition 'advice' because he obviously seems to know diddly squat about what is an appropriate amount of food (calories is what counts, and the volume counts depending on what the calories are for that item.)
My suggestion is to throw away the book and eat ENOUGH calories and plenty fruit and veges to get you through the day. You want to lose weight, and you want to do it in a healthy fashion. That means eating ALL your meals, and it means eating enough - and that isn't just 'enough because you aren't hungry' - it means enough to sustain your mind and body. SP recommends NO LESS than 1200 calories and THAT is for a woman who is normal weight AND sedentary. Bigger people need more and when you exercise you need more. By not consuming enough you seriously run the risk of compromising your health - your organs including your brain, your liver, your skin (it is the largest organ in the body) you kidneys, etc. You run the risk of blindness, and osteoporosis. I have worked with many elderly who have this condition, and believe me when I say this; it can be a VERY painful and debilitating condition.
Your body needs a good amount of protein - it needs calcium - it needs fibre - it needs healthy fats - it needs carbs! Your brain needs 500 calories alone to work on, What you are consuming is barely much more than that.
You will also compromise your metabolism, making it much harder to lose weight in the future.
Below is a link re food servings: www.sparkpeople.com/resource/nutrition_art