It would be worth it to double check all your cache settings. I was mostly able to hit cloudflares cache but actually the first request to the / of the site, said cache had expired. And that should just be a static site that NEVER changes. Weird. It is possible you're expiring the cache too quickly or pages are fooling cloudflare into thinking they're dynamic when they're static. I would look into all the tags and headers you're using, and cloudflare settings, and try to get it serving most of the traffic.

(good ideas from: Anthony, says you have him muted:) https://njump.me/nevent1qvzqqqqqqypzpm5aj708u9qc48m5w2a0stwfvzp2p4p9rdmmevts5mkweyl6mlmyqydhwumn8ghj7argv4nx7un9wd6zumn0wd68yvfwvdhk6tcpzemhxue69uhkyetkduhxummnw3erztnrdakj7qpq0z33mktkyffltunzf34ffcsfyf6lgdeu2clc9vj2c6km34xzezuqk6dq69

Then you can figure out how to mitigate the rando-event requestoors. If they're truly a DDoS it should be fairly obvious, and at that point, maybe you can just have people zap-subscribe to be able to add things to the njump cache. That's what I would do, you're sitting on a cash cow and you're gonna let it die off cause everyone uses it too much ;)