Sorry that this is happening... sounds like a doctor, perhaps meds might be a good option right now, as others have posted. I hear the frustration... letting him do as he pleases is not really much of an answer for you. Medication might be provide the pause needed to re-set things.

Is there anyone else to help you with this, any sources of support for you, perhaps to give you some breathing room, a bit of a break?

Sometimes it's the best of crummy choices - meds have stabilized my life, but there were some unbearable side effects that felt like they increased suffering. I realize the effects can be different for children/teens....

Take care