The solution is to elect Democrats up-and-down the ballot in 2022 (and, if SCOTUS renders the Summer 2022 decision that I fear they will on "Roe v. Wade," this opportunity becomes all the more baked-in), while pushing the simultaneous message of "Demand Better!"
Then, in January 2023, the moment that Democrats appear to be slipping back into any milquetoast patterns of performativity, propose a multipartisan Constitutional Convention that (from the perspectives of the elites in both major political parties) could threaten to upend their oligarchical grasp on power.