My father is critically ill, how should I describe my feelings towards him?

The mountain-like father fell. I can't believe it, this is true. Looking at my father on the hospital bed, life was counting down, I was heartbroken, I was helpless, and my mood was as bad as the weather. If a son wants to take care of him but his father doesn't, he must act filial piety, otherwise he will have no chance. Father, my old father, hold on! Hold on!