you should backup /dev/nvme0n1p4 (Windows recovery), save the disk layout (fdisk -l...)
and maybe save your boot sector too (don't know if this relevant for UEFI) esp. if you
got a function key (F2, F?, ..) during boot to recover you disk/windows.
think of the case if you want to sell the laptop in some years or recover a somehow
damaged windows (Virus, broken disk, ...)