I agree with eKatherine. You need to be eating vegetables!! I have such a hard time with getting enough vegetables in too so, I know it can be difficult.
As to your question about 'how much'... again, as eKatherine said, you should not be hungry if you are following the plan correctly. You basically eat until your are satisfied but not "stuffed".
I always start with a serving size of whatever I am eating and go from there. I weigh and measure everything
I eat. It's kind of tedious but, it's what I do. I can't help it, lol. If I am still hungry, I eat more; if not, I don't. Usually. My eyes get bigger than my stomach sometimes or whatever I'm eating taste so good I want to keep eating it!!!
While Dr. Atkins says you can eat 'liberal' amounts of protein (meats,eggs), he is very clear that you MUST eat your vegetables (that's where most of your carbs should
be coming from as opposed to say... condiments and sugar substitutes), drink your water (at least 8-8oz. cups a day), and exercise (even if it's just a walk around the block - which I don't do! ...yet!!!).
And... eat your fats, especially when you are having protein!!!
Hope this helps, much luck to you and congrats on your success so far!!!