There are three options I can think of:
1. Write down everything and find a successor, if possible; they must share my mindset and follow what I have written down closely. If you think of your works like a dynasty, they need worthy successors to continue the lineage.
2. Barring that, let the comic die in a blaze of glory! If my comic can't live without me, I will give it a glorious send-off, and write a eulogy that will be spoken during my funeral. Speaking of which, if your comic were to die with you, would any of you have a eulogy for it?
3. Figure out how to cheat death long enough I can complete the comic! For all I know that could be decades.