AJAX update order review table in checkout

On my WooCommerce checkout page, I am showing a notification before the order review section based on the cart total. I have included the following code in my functions.php file of my child theme:

function action_woocommerce_checkout_before_order_review () {
    // Get cart total
    $cart_total = WC()->cart->get_cart_contents_total();
    
    // Compare
    if ( $cart_total == 0.01 ) {
        echo '<p>' . __( 'My message', 'woocommerce' ) . '</p>';
    }
}
add_action( 'woocommerce_checkout_before_order_review', 'action_woocommerce_checkout_before_order_review', 10, 0 );

The problem with this code is that the notice does not appear if a coupon is applied to the order, such that the cart total equals 0.01 euro, but instead only appears after the page is refreshed.

How can I alter this code such that the notice is added/removed through AJAX? Thanks in advance!