I remember there was a way to backup everything to a USB drive then
swap in a new laptop drive. Admittedly it'd be easier to just buy a usb hard drive and just plug it in if you want to expand storage. The only "gotcha" is if the external drive uses larger drives it might require external power. (I have a 3tb drive hooked up to my PS4 pro that gets power from the USB connector so I don't have to worry about that.)