Typically you can link up your NAS to dropbox,onedrive,google drive (just google your model and what you can do with it) most offer a few hundred gig free anyway which is fine for your typical backup of important holiday pictures, documents etc.
Something to try and work out if you get the chance and can be f**ked
Otherwise yeah like you've been doing copy stuff to it from your laptop so you've got it in 2 locations, the disadvantage of that is if you get robbed or house burns down all your data gone.