Would not surprise me if that happens.
As to not enough time, the Dems always have time.
They have the total power of the news media to say “Americans hate the choice of Trump versus Biden as more polls are showing. What do you, our panel members, believe is a way out of this?”
And “It came as a shock when the breaking news came over all the sources this morning that VP Kamala Harris is stepping down and will not be the next President for the ailing Joe Biden who remains in guarded health condition today.”