Off the top of my head based on my own prep for my country (not US):

1. Find a sympathetic physician / family doctor who will vouch for your exemption. (Auto-immune disease is a good one - common and already well tied up with vax side effects)
2. Find a sympathetic physician / family doctor willing to “do an Oscar Schindler” and jab you with saline and record your entry for a ‘small administrative fee’ (yes, I am aware Schindler likely didn’t exist)
3. Speak to America’s Frontline Doctors - https://americasfrontlinedoctors.org/ - I have seen them being recommended elsewhere.
4. Consider identifying as a protected religious or other category.
5. Seek redundancy or early retirement, voluntary or other, to get some payback for 20 years service, and then get another job with a non-fascist organisation.
6. If you are Covid recovered, can produce evidence of having antibodies (I know people who used Cerascreen for antibody testing with no complaints), or can prove T or B cell immunity, you are already immune.
7. Join any movements and/or class action law suits for your state, sector, profession etc and turn their guns on your employer. It’s not enough that good people walk away from these proto-fascist companies - these companies need to feel the consequences of their actions as pain where it hurts.
8. Hunker down, form a neighbourhood militia, stockpile food and ammo, move off grid, learn to operate ham radios etc.