Htaccess - Rule to remove https on 1 specific page only

I recently changed my site to secure hosting, but I draw content from 2 outside sources and I those pages are getting messed up with https.

So, I need to write an htaccess rule that turns off https for specific pages.

Here’s the rule I tried:

RewriteCond %{HTTPS} ^on$
RewriteRule ^(.*)$ http://www.example/folder/page.php/$1 [NC,L,R]

But, this redirects the entire site (homepage) to the page above, which is not what I want.

When someone goes to my site and clicks on a link to this specific page, I want that page only to be http instead of the default https.

Hope that makes sense, thanks in advance for your help.