Hi Will,
Sorry to hear you’re going through a tough time. Have you ever done any counselling or talking therapy? I’m not sure powering through for two years is the best option.
Addiction can often stem from attempts self-medicate underlying mental health issues like anxiety and depression. It may be that you’ve always had problems with anxiety, and alcohol and weed were your way of coping with it. I know that weed was my primary means of coping with anxiety.
Doctors tend to medicalise mental health. That’s why I’d suggest counselling or therapy. That will help you develop better coping mechanisms without prescription medications.