[tor-onions] Disabling "subdomains"

Hi, as one of my hidden service's subdomains is currently being dos-ed, I would like to know if there is any way to disable the tor daemon just passing through all requests. I could also tell my reverse proxy to send a HTTP 444, but this is a little inconvinient. Afaik, the subdomain functionality isn't official, but I thought it could maybe still be possible.

Best, shruub