Yes, along with his social/emotional delays, he has some eating and speech issues too that we're working on. He never nursed "normally" and would react violently when I tried to introduce foods or even a different liquid. When he first tasted water, he made a sour lemon face, I had to mix breast milk with water, and slowly wean him into another taste. Now, most of his diet is milk and soy milk, along with a few other choice foods. So I do think he copes with some of that with the binky too, and it's hard to remove something when he doesn't have the tools to cope with that change. And he doesn't get to have it all day, only in the car, at quiet times, and if he has pushed the tantrum so far he can't calm down on his own.