My only experience with this was during Covid times (otherwise I self-host). I created a site hosted by Discourse quickly in order to create some specific Covid related forum.
For some reason I managed to create a click-bait topic. I think we had about 10.000 users looking at it at the same time.
I thought this was a problem so I approached Discourse team immediately to ask what that would mean. Their answer was
“Don’t worry, we can manage, let’s see how it goes…”
So I doubt you get a freeze mid-month… Discourse is all about communication, all the way, down to the last team member. If you would run into a problem, something went terribly wrong.