There have been a number of plugins that turn a Wordpress/other website platform site into a static site.
So you make dev.yourdomain.example.com and block it from basically everything, client logs in the there and does the needful, and then when done hits "publish" and the plugin writes out a static site to example.com
1. How many of them migrate tricky features like featured images?
2. How many of them preserve existing URLs and GUIDs?
3. How many of them preserve the default RSS feed URL (Hugo's default is different from WordPress)?
4. How many of them preserve embedded Google Maps?
These are several issues that forced me to write `wp2hugo` for migrating my personal website.
So you make dev.yourdomain.example.com and block it from basically everything, client logs in the there and does the needful, and then when done hits "publish" and the plugin writes out a static site to example.com