It is possible for him to do this himself. He must get away from his so called "friends" in order to make that happen. This is the same for any type of addiction. You can't quit smoking while hanging out in the smoking area on breaks. You cant quit drinking while hanging out with friends in the bars. You cant quit criminal behavior while hanging around with criminals. Its that simple. It sounds like your son isn't quite ready to quit but may be getting close. Hopefully the realization that those people cant be his friends if he wants to be sober will come to him someday.
If he isn't being argumentative, insulting, asking for money, etc... then there is no need to go no contact. Your moral support can make a world of difference if he is actually trying to change his life, just dont offer advice unless its asked for. Let him figure it out. You do need to not only stop the money train, but derail it, then tear up the train and the tracks and repurpose the materials! Your son is a grown man and as such, MUST be allowed to find his own way in life. If he is truly trying, holding down a job, staying clean, staying away from the druggies, then you can consider helping but even then keep it to a minimum. In order for him to truly become an adult he must want to and he wont want to if you are taking care of things for him.
