AEM 6.4 | Apache Dispatcher rewrite rule to restrict classic ui authoring and exclude for one

We have a use case where classic UI authoring should not be allowed if author tries with cf# then it should redirect to sites.html. but for only one page we need to allow the classic ui authoring?

Tired with rewrite rule for "cf" to redirect to sites.html but how to exclude one case such as allow for "content/myproject/testpage"?

Thanks,

koti