Two months may seem like a long time but if he was mistreated by others then it will take more time for him to come to allow you to touch him. Some are just more stand offish and don't like being touched very much and maybe Pinky is like that.
I would continue to do what you are doing, don't force yourself on him, just go close enough that he is comfortable with and give him some more time to trust you. His trust has been damaged and it will hard but not impossible to gain it.
Continue to do things where he can see you, get some of his toys and play with them, act like you are having a great time with them, greys are curious and when he is ready he will come closer and join you but let him make that decision.
I wouldn't try to touch him for now, he needs to learn to trust you and if you keep trying to touch him then he never will trust you.
Some of the more knowledgeable members will have some other ideas and suggestions for you too but hang in there.