redirect domain to one URL

hi folks,

I have been trying to get my blog at forexpm.com/blog to 301 redirect to https://www.forexpm.com/blog

I want it to redirect to the WWW.

I tried putting a 301 redirect in the root of my domain .htaccess using this code:

RewriteEngine On
RewriteBase /
RewriteCond %{HTTP_HOST} !^www.forexpm.com$ [NC]
RewriteRule ^(.*)$ https://www.forexpm.com/$1 [L,R=301]

but my blog doesn’t respond to this command. I know there is a .htaccess file in the /blog/ directory I am guessing this is overridding the .htaccess in the root. Can anybody help ?

Thanks