1) Mandatory vaccination, all age groups, boosters etc.
AND
2) permanently reconfiguring our society to reduce social contacts such that with the vaccines, COVID is suppressed. If the vaccines work well, then small (maybe no) changes will be needed. If they don't, then large changes. WFH, no indoor hospitality etc.
We can cycle through lockdowns, we can wring our hands about vaccinating children, we can even pretend it isn't happening, but the formula is the same:
vaccines+restrictions=suppression
We don't know what the LHS needs to add up to, and we don't know how much vaccines can give us, but this equation must hold, as the alternative to suppression is complete failure of our healthcare system.
To put another way, suppression is the only steady state. If you allow the virus to run unchecked, then eventually restrictions have to be reimposed. If you release restrictions, then the virus ramps up again. Either you tailor restrictions to suppress, or you bounce up and down around that point. Vaccines move that restriction point down.