Litespeed Redirect home page to another page in .htaccess file

I have created a WP LearnDash site that is using LITESPEED WP CACHE PLUGIN in the .htaccess file.

I simply want to automaticlly redirect the home page to another page – for example:
https://music.domain.com (current homepage)
https://music.domain.com/index.php/courses/theorycourse/ (desired redirect)
I set the home page in the Astra theme but I don’t have access to the desired redirect page so I can’t set it directly.

A current section in .htaccess (that I am not supposed to modify)
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteRule .* – [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
RewriteBase /
RewriteRule ^index\.php$ – [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

I suspect it might be something like:
RewriteRule . /index.php/courses/theorycourse/ [L]

But perhaps I need an aditional rule after the orginal rule but in a new or different section.

I am in over my head so any help would be greatly appreciated.

Thanks,
Carl