My alcoholic father

So for most of my life my dad has been an alcoholic. It wasn't terrible until his business burned down to the ground and my mom developed breast cancer the same day in 2007 (when I was in middle school). My sophomore year both parents became alcoholics and in all honesty I shouldn't have been living there. My mom was semi abusive when he drank and my dad would fall and break things and there was always blood EVERYWHERE. I basically raised myself. Anyways, down the road my mom sobered up but my dad didn't. He lost everything from alcohol. His family (my mom brother and I moved out), his house, his job, EVERYTHING. I was tired of seeing him in and out of rehab, in and out of the hospital, not being able to walk or talk, and looking 85 even though he was only 50. He wasn't allowed to come to my graduation or see me start college. He sobered up my sophomore year of college and became the dad I remembered again. It took me a while to allow him back in my life again. Fast forward to now-- my 18 year old brother lives with him. My brother told me that he's been finding alcohol bottles around the house again.