_form_comment_form_alter for certain node type When using the hook_form_comment_form_alter, how do I only target the comment form of a single content type?

Right now it is targeting all comment forms, and I need it to just target the 'Blog' content type comment forms
You should use comment form ID for that content type: hook_form_comment_node_xxx_form_alter

which comment_node_xxx_form is comment form id for content type xxx:

function hook_form_comment_node_xxx_form_alter(&amp;$form, &amp;$form_state, $form_id) {
    ...
}