I would say you dont have enough food volume. Pump up the amount and variety of veggies, I would increase your fat intake and depending on your body type and activity level you likely want more protein too.
I eat 2 to 3 cups of veggies per meal either roasted, steamed, raw or fried in fat and coconut oil and spices. I am a big active adult male I eat about 200 g of protein a day if I can though sometimes I just can't eat that much.
We would need more information about you to say better but I would suggest staying away from the nuts and too much dairy for a while as you adapt to this way of eating. It is really easy to overdo them both and have them take the place of more nutritious foods calorie for calorie.
And if you can, read the book.
Hope this helps.