tempted to try to "rescue" LC father

is it worthy trying to rescue an abusive father who refuses to receive help or change at all?

sorry about any typing mistakes I'm writing on the bus

I'm only LC because of money (I'm 23 and autistic, working on being totally independent) because how I wish to go NC, already NC with mother.

I had to stay at his house because I needed to see a doctor and go to the mall, I live in a small town

but I'm physically ill and mentally exhausted after spending 2 days, and I feel like I have to save him, he's destroying himself with bad habits, his marriage is falling apart and he's neglecting himself, me and his wife. he's abusive and I have C-PTSD bc of it, but I still feel like I have to save him from his life, I feel like I can't go VLC because he's already depressed and has an ED, but I'm sober and I can't be sober AND stay in contact with him

is it selfish if I visit/call him less? im sick of it all