M.T.
My son was 3 when he gave it up. I wish we did it earlier. But, we had a binky fairy come at night. He had to get all binky together and we put them in a box outside. When he woke up he went outside and binky fary left him some big boy toys. It was hard for about a week. He would ask everynight for the binky back just one. He then called the fary tinkerbell and said he wished she would bring them back. I told him he was a big boy now and all the new babys in the world needed binkys. The first night was the worst, imagine someone needing drugs really bad. HE pleded and begged for a binky just one mommy please. Then everynight for a bout a week he started asking for something for his mouth. But it all worked out. And he is fine now.
Good luck