Back up your website. Backups also imply knowing exactly how a restore works.
Yes I know literally everyone says this about everything. I'm saying it again, to you now. In hopes that you avoid the pain of Data Loss in the future.
If you made your site with Grav, there's a whole backup section in tools that will download the entire thing into one zip file. Restoring is literally just dumping that zip into a webroot. Great for exports/imports to new hosting too.
If you're using static file generation, you probably have a local copy of the files. Might be worth just throwing those all into a zip every now and then. If you're doing some kinda fucked github workflow, maybe download the repo as a zip. I think github will let you do this?
If you're using Bear Blog or some other Platform-y service... donno. Look that up.
If you made something with a database, the backup process is probably multi step.
It's also good to take the time to document exactly what you did to set up a website. You're not going to remember that shit, no one does. Write it down in case you need it in 3 years time.
