I’m not a doctor. I suffered from clinical depression for years until I got help. I attempted suicide too. If your friend were serious he’d have killed himself a long time ago. Is he on any medication or seeking treatment?
Oh dear. Bless you.
He’s on LOTS of medication, has been as long as I’ve known him (getting on 30 years now), I think the technical term for what happens with his chemistry is “drift”. His cocktail always gradually loses effectiveness. Things got better for him when he got a good woman, but it’s still rough. He’ll do the 20 hours of sleeping thing, the days without food thing. He’s tried to kill himself a few times, though not since the woman. But it’ll happen again, and one of these days he’ll succeed. It’s an inevitable thing you face with depressed loved ones, teaches you to value the time you have with them.