Back to OP
@cheeselog8 : interventions are extremely difficult if the person does not want help.
My family has lots of experience in this realm.
My Uncle "Bob" was a lawyer and a severe alcoholic. He drank 1-2 bottles of Smirnoff per day. If he stopped drinking, he would have seizures.
My other Uncle's tried interventions constantly. Bob would always make excuses and deflect. He went to rehab a few times but it didn't take.
In the 1990's, Bob was flying Delta or another commercial flight to Chicago and he had a seizure on the plane and they had to do an emergency landing.
Fast forward a couple years: Bob had another seizure and ended up in a hospital that his brother (my other uncle) was a doctor in.
My Uncle the doctor did some blood tests on Bob and saw that his platelet count was extremely low.
My Uncle told Bob in the exam room: "Bob, if you don't stop drinking...you're going to die."
Bob made some excuses and deflected. A year later, my Mom (no pics) and other Uncle (not the doctor) found Bob dead in his bed with 7 empty Smirnoff bottles in the room. He was 54. At least he went peacefully.
My older brother was an alcoholic and heroin addict for about 20 years. He was homeless for years, got in accidents, robbed a bank and was a menace to society. My family tried interventions and none worked.
In June of 2017, he was walking in the hallway of his apartment building and dropped dead. Another resident that lived nearby found him. He was 41.
Addicts are masters of deception and denial and there's often not much you can do.
You can recommend your brother see his doctor. I'm not an expert. Try to keep your expectations realistic.
Changing people is nearly impossible, at least in my experience.
Good luck and Godspeed!