By... getting vaxed himself? Why aren't the vax campaigns leading with Trump's action – and his repeated verbal endorsement of choosing to get vaxed – to overcome resistance in his followers?
Such over-focus on Trump is a pathological scapegoating to deflect responsibility on the part of both the professional permanent bureacracies, and the current administration.
Trump did awfully, yes. But the mistrust & errors spring from far deeper cultural issues, and repeated failures by the public health officials - in their mixed-messages, manipulative exagerrations, & arbitrary punitive actions. Vax resistance is at some of its highest levels in urban minority communities with no love for Trump.