Is there any way I can schedule an edit to come into effect at a certain time, like how you can do with new posts? I want my archive page to update at the same time as my new post comes up, but right now I have to do it manually.
There is no way to schedule editing of pots. You made your own Archives page rather than using the Archives shortcode. On all WordPress blogs when we publish or edit and click “publish” or ‘update” the software updates the Archives pages and/or Archive widget automatically – we do nothing – the software does it all.