Can I use a subdomain only without an enterprise account?

I work at the ILR school at cornell.edu. I would love to run some Cloudflare Workers at ilr.cornell.edu and some subdomains like execed.ilr.cornell.edu.

But because of the complexity and size of the university, I simply can’t move the entire cornell.edu domain to Cloudflare.

When I try to add a site like ilr.cornell.edu, though, I get the message:

Please ensure you are providing the root domain and not any subdomains

Is there any way I could add ilr.cornell.edu or execed.ilr.cornell.edu only?

My end goal is to point https://execed.ilr.cornell.edu to a Cloudflare Worker at https://execed-redirect.ilrweb.workers.dev/, so if there is another way to do so, I’d appreciate hearing about that, too.

Thanks!

You would need Business Plan at a minimum to do this with a CNAME.