I've always done this and it's a great idea, of course!

However, since I'm running out of storage space and don't have any backups of the Bitcoin folder/data, I need to resolve this soon.

Nowadays, if I need to redownload the database and blockchain again, I don't think I'll have many problems. However, with each passing year (every day, actually), the size increases, and it will take longer to synchronize a full node.

I just want a way to make these backups, and when restoring, for example, from one laptop to another, move the (updated) backup to the laptop with the outdated Bitcoin folder, without having to delete the blockchain/blocks/database, allowing the updated backup to complement the outdated laptop's database.

I don't know if that was clear, but that would be amazing.