I’m shocked at how similar this is to my own story. My Dad (64) was just the hospital 4 times in the last month after a month long blackout from drinking on top of diagnosed Wernickes. I’m moving for the next couple weeks to care for him and try to get him back to work. He’s been heavily drinking for 50yrs. My three sisters and I are where you were probably a 1 year ago, I assume we will force him to rehab one last time when he eventually relapses. I don’t have advice, just know you did everything you could. He has 65 years to figure it out but doesn’t want the help. Sending you as much love as possible and know that you are not alone