He also needs to delete every ones number to do with coke.. dealers, friends even family. I came off all social media .. facebook.. insta.. snapchat. The lot! He can easily message dealers and mates.
No alcohol as this is a main trigger to get coke. He needs to keep him self busy. Especially coming up to when he knows he will use. Take up some new hobbies, gym.. reading.. decorate.. walk, run.. anything.
But he needs to keep him self really busy. Just ask if u need any advice