Need Help with .htaccess and folder to subdomain redirect

[bpat1434]

I've got an SSL cert set up for a sub-domain and I'd like to (1) deny users the ability to reach the subdomain without SSL and (2) not allow users to reach the folder via: domain.tld/sub.

cPanel by default creates subdomains in a folder in the document root. I'd like to disable people from reaching the subdomain via the "/subdomain" folder link, so I've set up my .htaccess like so:

RewriteEngine On

# If they're not using SSL, force them to use it.
RewriteCond %{HTTPS} !=on
RewriteRule .* https://manager.domain.com [R,L]

# If they're reaching the page via: domain.com/manager,
# make them use manager.domain.com
RewriteCond %{HTTP_HOST} !^manager\.domain\.com$ [NC]
RewriteRule ^.* https://manager.domain.com [R,L]

Now this gives me an infinite loop issue. Is there another solution to my problem?