Does he know about Al-Anon? That was a lifeline for me when my second husband was hospitalized with liver/kidney failure due to drinking. I'm sure he's been dealing with a lot of insanity and chaos in his life, and you could simply mention that Al-Anon is a great group for family and friends affected by someone else's drinking--maybe look up the number for the local office, or check online for a list of meetings. There was actually a group that met at the hospital where my ex was being treated, so that's where I got started.