So sorry to hear all that Revo, I don't really know what to say in situations like this.
My uncle also died because of liver cancer, but I had chosen to not see him when he was at his sickest (because I wanted to remember him like he was before and not what he looked like in the end).

Obviously, this is your dad, so you can't do that.
I guess, just try and make the most of it, and I'm pretty sure he knows you love him.

Much strenght