I was in a simular boat three years ago I ended up having counselling 7 months off work and a course of happy pills. After I realised I had a problem I went to the doc and the ball started rolling. Sorry but he has to make the first move himself – he needs to recognise that he has a problem. I’m mostly good now, I know my triggers – still have low days even though I’m taking the pills, but doesn’t everybody.
Good luck, I feel it’s a matter being there to pick up the pieces when he realises that he has issues.
Ash