It is very easy. And if it does not work out, just boot to grub menu > Advanced Options and revert to the earlier kernel by selecting it from the list.
sudo add-apt-repository ppa:tuxinvader/jammy-mainline
sudo apt update && sudo apt install linux-generic-6.12
To undo:
sudo apt remove --purge linux-generic-6.12
sudo add-apt-repository --remove ppa:tuxinvader/jammy-mainline