How do I reinstall the Boot Camp drivers without destroying my Boot Camp partition?

I have a MacBook Pro 2017 with a 15 inch display running Big Sur 11.4. I have a bootcamp partition Windows 10 21H1. I use the Boot Camp partition most often as a VM under Parallels. With the last Windows upgrade when I boot Windows natively it no longer can find the AMD graphics. Which is very frustrating because it can't use my 2 monitors. I want to just update all the Boot Camp drivers but the Boot Camp Assistant insists on wiping out my existing partition before writing the driver to a flash drive.

1. Is there somewhere safe, preferable an Apple site, I can download the package of Boot Camp drivers for my hardware?
2. Or is there a way to get the Boot Camp Assistant to leave the existing partition alone and store the drivers somewhere I can copy them to my working Windows installation?