I’m still on 10 myself so I can’t say for sure. I remember I needed to go into device manager and disable but not uninstall the Microsoft stack, and stop it from automatically updating.
It’ll break the Bluetooth settings/control panel and you’ll need to re-pair all devices via the new icon in the system tray. It looks basically the same as the old one and both might be present, so I advise hiding the old one.
I also seem to recall having to change a setting relating to the pairing password. Maybe? Sorry it’s been a while since I got it set up and it’s worked flawlessly ever since so the details are a bit fuzzy.