Yes! Even my own stuff sometimes goes a few hours to a day without a single request, the internet is either very slow and dead or super active, no in-between, I think it heavily depends on who indexed you and how big your site looks like or maybe identified stack (for vuln crawlers, i'd wager if they see a wordpress marker they'd put you on some list to get retried by the swarm) or something.

My datamining project for a game for example, that noone besides me and 2 friends use, gets thousands of requests per second, because all the AI bots found it and try to index every single page (thousands of ssr pages) and they repeat the requests when my cache-control headers expire (ie: when i consider the old page stale), so it's an endless stream (I dont mind the challenge of serving all of these at high performance xD).

My main website, in the same domain (not a subdomain), barely gets any requests, it only has the one main index page with a single link to the datamining subdomain, that's about it.