I asked my doctor when Coronavirus will end. He said : "How should I know, I am not a politician?"
Dr. Fauci says COVID-18 will start declining right after inauguration day on January 20th.
Fauci's Timetable
Of course his prediction may change depending on the outcome of litigation.

These sort of virus come and go in fairly predictable bell shaped curves, like the 1918-1919 pandemic, which was thousands of times deadlier for people of working age and school age.
Deaths Chart
The goal seems to be to give Biden, the Democrats and a national mask mandate credit for what would have happened under any circumstances.