How to mount Xavier's /usr to nvme

Due to space reasons, I want to mount the /usr directory of xavier to the ext4 partition of nvme. What should I do?
I tried to mount the home method, but unfortunately it failed and the device cannot be turned on

If possible, I want to put the system on nvme as much as possible

https://elinux.org/Jetson/L4T/Boot_From_External_Device

Please check this.