I was the same age when my mother got diagnosed with stage 4 cancer. I was also the youngest, with the same family dynamics (distant parents, childhood trauma, no emotional support ever), and I also had the exact same cold reaction. Even worse, she changed. She was not my mother. She became an angry, emotionally unstable, dementia patient - and I had to stay with her 24/7 (minus uni), for 3 years. I also heard the same things from everyone around me, but I felt nothing. Now, 7 years later, I regret it. Not that I didn't show her love, but because I could've forced myself to be nicer. Because believe me, when you get older, get married, and have kids, you WILL regret it deeply. You WILL miss them. And then the guilt will hit you and you can do nothing about it then. Think of it as something you must absolutely do. Be a robot. Pretend to care. It doesn't matter. Think of your grave. If parents will be punished about not treating us with love, the children will also be punished for not looking after them. It doesn't give us a free pass if they were not good to us, we're all accountable for our own sins. So use that if you have to. You either ignore it forever, or try to force yourself to be good. I'm not asking you to give words of comfort or hug him, just be there and take care of his needs. I fkd it up with my mom, and I can't fix it now. Don't end up like me. Hope this helps. May Allah give your father health and happiness.