Is it possible to host your only one of your page in different subdomain?

Publishing help Hosting
2

Hi Beril, so what you’d want to do is

  • Connect your domain and subdomain to the project
  • Make the pages you do not want to be published to the sub-domain as drafts and set that page as a homepage (homepages cannot be saved as drafts)
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    -Untick your main domain from the publish panel and tick the sub-domain and then publish

something similar to your issue here