how to populate dropdown with terms from a taxonomy

I found a solution online but it just wasn’t enough. It’s currently pulling the terms, but I wanted them to be relative to the post that I’m on.

What I mean, and to give more context. I am posting a cf7 form on a job posting. The job posting has a taxonomy for location terms. I am displaying these terms on the page itself as part of the job description.

The dropdown shows ALL terms though, I need it to show only the ones that the post displays, otherwise the user could select a location that’s not applicable.

This is the code:

function dynamic_select_list( $tag ) {

    // Only run on select lists
    if( 'select' !== $tag['type'] && ('select*' !== $tag['type']) ) {
        return $tag;
    } else if ( empty( $tag['options'] ) ) {
        return $tag;
    }

    $term_args = array();

    // Loop thorugh options to look for our custom options
    foreach( $tag['options'] as $option ) {

        $matches = explode( ':', $option );

        if( ! empty( $matches ) ) {

            switch( $matches[0] ) {

                case 'taxonomy':
                    $term_args['taxonomy'] = $matches[1];
                    break;

                case 'parent':
                    $term_args['parent'] = intval( $matches[1] );
                    break;

            }
        }

    }

    // Ensure we have a term arguments to work with
    if( empty( $term_args ) ) {
        return $tag;
    }

    // Merge dynamic arguments with static arguments
    $term_args = array_merge( $term_args, array(
        'hide_empty' => false,
    ) );

    $terms = get_terms( $term_args );

    // Add terms to values
    if( ! empty( $terms ) && ! is_wp_error( $term_args ) ) {

        foreach( $terms as $term ) {

            $tag['values'][] = $term->name;

        }

    }

    return $tag;

}
add_filter( 'wpcf7_form_tag', 'dynamic_select_list', 10 );