How to cope with my Dad's mood swings and very angry outbursts?

My dad is 70 yrs old is a recovering alcoholic and just gave up smoking in the last couple months. He has always been a very independent man who does things his way. In the last couple of months he has been in and out of the hospital for his diabetes and anemia. The doctors also said he wasn't taking care of himself well enough to he has mood in with family. Dad is insistent that he will be back on his own by March 1st but we know he can never live alone again. Dad has times where he is very verbally abusive to his daughters and granddaughters. The daughter he is living with takes the brunt of this and I wish I could help her because I was his caregiver up until he had to move in with someone. I know how angry and down right mean he can get. How do we make dad understand he can never live alone again without making him so angry with the daughter he is living with? We sometimes wonder if the anger is coming from his addiction withdraws or if he could be getting some dementia. Any info and support we can get would be great.