My teenage son is 17 , he spends every penny he has on THC vapes and cannabis. So I’ve stopped giving him money. He has food bought , lifts , bus tickets . I can’t even buy him clothes as he just sells them on Vinted. He did have a job but list it as he turned up stoned one day. He’s dropped out of sixth form as he was too unmotivated and won’t talk to me? What should I do I have no idea