Trump has millions of doctor-addicted boomers with fragile egos that he needs to keep on his side. He needs to slowly "learn" how bad the vaccine was at a similar speed as those normies so they can feel comfortable going through this process. I think those unhealthy normie boomers with a bunch of prescriptions are by far the biggest reason he had to play pro-vax. It's extremely difficult for a person to admit that their doctor, a person they've put total faith in on for years, is at best poorly trained and misled, and at worst malevolent.