Ever heard of Neu-Becalm'd and Neu-Recover? they are great herbal substances, that rebuild neurotransmitters that are depleted by alcohol as well as several other drugs. The combination of the two is the best, and fastest way to recover and decrease side effects of withdraw.
Some people on here have used alcohol in the past, but you'll find that most of us here used benzos or opiates as our DOC. My heat goes out to you and your father. I agree with FLaddict..this is not something to be done at home. Maybe someone will chime in here with some help...
Alcohol detox is not recommended to do without medical supervison. There is a high risk of seizures and even death. I would talk to his doctor first before attempting to detox at home.