14year old DS has deteriorated beyond recognition in terms of personality and attitude. Smoking cannabis, stealing and goes missing all the time. He has missed lots of school. At a meeting recently the school advised me to take him away somewhere remote, just the two of us, for a few days. No phone, no nothing. Just us. A sort of 'intervention ' to talk to him about cannabis use and his general attitude to life. Has anyone ever done anything similar? How did it go?