I spent a while on drugs and incased in different habitual behaviors and most times folks like this have to fall all the way and realize they have run the string out before they listen. As long as their might be one more chance that they can do something to lie, steal or con their way out they will try.
Most times they have to hit bottom and realize all they can say is help before they can be helped.
The prison system as bad as it is works out to be a great rescue net. God has some real true evangelist’s in there that he has his hands on.
I can support you by praying for God’s mercy for him and when falls to fall into a situation where he will find and accept God.
I will pray that he runs out of escapes and gives up on this deceit quickly so the he can recover.