I'm pretty much of the opinion that 1 on 1 persuasion is very unlikely. If you wanna convince someone of something you've gotta basically hijack their echo chamber by getting them to think that what you're proposing is the popular stance. I mean, even here among folks who are at the fringes of liberalism, the vast majority are not masking or taking Covid seriously, instead just trailing months behind the actions of the mainstream libs. You've gotta create competition to the Hegemonic Culture, but that means actual organizing; Creating propaganda, coordinated posting, strategic advertising, mass slop creation, think tanks, etc. If you really wanna know what it would take, read Dark Money: The Hidden History of the Billionaires Behind the Rise of the Radical Right by Jane Mayer, it's basically a blueprint for hijacking a culture and it totally worked. Even though it's pretty lib, every leftist should read it because the techniques they used is the only way anything is gonna change.