WOW, in that case I am here for you for as long as the moderators will allow this thread to continue.
If your short term goal is to get your son away from the chevra and back on the derech, I’m afraid I don’t have any tricks in my bag that would help you. As a long term goal it can be achieved but it will be something he will come by on his own or more realistically with the help of other shelichim.