Zero, good luck with that, it sounds as though it will work for you.
I have done the same in the past... tried eating just one or two squares of chocolate, or one truffle from a box, or a small piece of cake. For me, it really DOESN'T work. I can only say it must be like giving a 'small' whisky to an alcoholic and expecting them not to want more... it's as if all logic is wiped clean with that first taste and old patterns of bingeing take over, and then when you 'come back' to yourself and realize what has happened (the whole bar of choc, or the whole box, whole cake, and more...) all you can feel is shame and disgust for failing yet again.
Some of us have programmed ourselves with very strong addictive responses. Getting over them is not as simple as having just one small portion, if it was, I guess there wouldn't be so many people overweight or with eating issues. I know that your approach is what I should aim for, a normal way of eating with no foods outlawed, but at the moment some foods are such a strong & overwhelming trigger I just cannot. Does that make any sense?
xxx