Hi there,
Thanks for writing in! If we add multiple variants by default then your site will be incredibly slow as it’s not usual to add that much font-weight variations. If you want to add the font with Child Theme then you can control which weights you want to add.
Let’s add this within Child Theme’s functions.php :
add_action ('wp_head', 'montserrat_google_font', 9999 );
function custom_google_font() {
echo '<link href="https://fonts.googleapis.com/css?family=Montserrat:500,600" rel="stylesheet"> ';
}
Hope this helps.