Well, I got the main partition resized thanks to this blog post. It was turning off things like hibernation and system restore. Then I shrank the Windows partition down to about 98 GB. Take that, Windows!
After a reboot, it was pretty smooth sailing. After installing the proprietary NVIDIA drivers and restarting with a special pin entered from the boot partition, I restarted again. However, I got the error “Nvidia kernel module missing, falling back to nouveau” no matter what I tried.
So I started thinking I would need to install Arch Linux, as it seems to support NVIDIA drivers well. But another contender emerged: Pop!_OS. Yes, of system76 fame. I had heard of it many times but never tried it.
I made another live USB stick and split the Fedora partition in half, installing Pop!_OS (Secure Boot needs to be shut off otherwise the live USB likely won’t start).
Lo and behold, it worked out of the box. The keyboard backlighting can be controlled with the function keys just fine, although I haven’t tried changing the colors yet. Pop!_OS even wakes from suspend after lid close, something that I’ve seen fail many times on other OSes.
So Pop!_OS, you have a new fan.