Alcoholic brother

He’s a marine veteran that took a downward spiral years after he was medically discharged for having seizures. He gave up a baby he had with his coke head ex which messed him up further.

He’s been told he has liver damage (due to alcohol and drugs) in yet he continues. I’ve tried talking to him but it did nothing.

Idk how to be loving and supportive but still set boundaries for my own family. I’m broken hearted and feel I’m watching him whither away... 😔