I think previous one is not good as normal mode is nested so that normal_exit
wouldn't back to rescue mode in the first place. It'd be better to exit current
normal mode and start a new one from rescue mode.
set btrfs_relative_path="yes"
search --fs-uuid --set=root e8048408-27ab-4d44-ad40-1000c0253f83
set prefix=(${root})/boot/grub2
normal_exit
normal