Try a feed reader. I use Feedbro. It allows me to see all new posts across the entire site, categorized at the granularity I desire (one feed for entire site, one feed per page). There was a learning curve for me (I had never used a feed reader before), maybe sort of 30 minutes of fiddling around and figuring out what it could do.
Thanks-is an rss feeder available on a phone? That’s how I keep track of this page.
also, I do scan the times of last post, but the main topics page is often inaccurate even after reloading the page. For instance, my sandbox says last updated 2 minutes ago, when in the subtopics page it says 31 minutes.