<human>: Give me a shortened version of the text

Wall of text, on my mobile sorry!!!

So my title kinda says it all. I'm 21, been living 6 hours from home for going on 4 years at college. I've been dealing with depression and anger issues, as well as the possibility of borderline personality or bipolar disorder(they don't know what's wrong). But recently in therapy my alcoholism, and self medication has been a topic. 

My family has a history of alcoholism which I've always just ignored and decided was normal. My dad is a 2-3 drinks a night during a week night and 4-5+ on a weekend. It wasn't until he started remarking on my issues that I really looked at him, and his. I feel so judge mental because I love my daddy. He's my best friend and always has been. I'm definitely closer to him than to my mom, but this has brought about some really negative feelings. It's not resentment so much as disgust and disappointment. 

My brother(18) and I are both out I the home but my sister(9) isn't. Truthfully I'm worried about her because my dads drinking has worsened, especially over the last 3 years or so. I want to confront him but I know his reaction will be I don't know what I'm talking about and that he can stop at any time. I'm financially dependent still as he signs my parent loans for school plus my little sister is still at home, therefore cutting contact isn't a choice. I don't know how to handle wanting to turn away, but he's not my dad anymore. He's not the man I grew up looking up to, and I'm honestly sad. I miss him, and I just want to help him.
<bot>: therapy that family disapproves of has made me realize my dads alcoholism, and subsequently caused me to want to withdraw from him despite loving him because I know he won't change. How to combat this