Welcome helpless.
I surely know first hand how this feels. I am dealing with my own version. But my son is 29. Our real problems began when he was 19.
My own son is mentally ill.
It sounds like for your boy it may be drugs. When his lifestyle changes it is likely your real son will emerge intact over time.
Meanwhile, this is your journey too. How to own your own hope. How to find value in each day. Even when he may be temporarily lost. Especially then. Finding real support. Strengthening boundaries. Building sanctuary in your home and especially yourself.
I hope you keep posting. Take care.
