woocommerce stripe payment method fee

I am currently using the function below in my theme functions.php file to add a convenience fee to the entire cart, however, I would prefer to only add this fee to the credit card payment method only. I don’t see that setting in the payment plugin I am using (https://wordpress.org/plugins/woo-stripe-payment/). I have reached out to them as well.

Is there a way to modify the function below to apply the convenience fee only when the user selects a credit card as the payment method so it doesn’t apply to ACH payments?

add_action( ‘woocommerce_cart_calculate_fees’, ‘add_percentage_processing_fee’ );

function add_percentage_processing_fee() {
if ( is_admin() && ! defined( ‘DOING_AJAX’ ) ) {
return;
}

$percentage = 0.027; // 2.7% credit card processing fee
$cart = WC()->cart;
$cart_total = $cart->cart_contents_total;

// Calculate the fee
$processing_fee = $cart_total * $percentage;

// Add the fee to the cart
$cart->add_fee( __( ‘2.7% credit card processing fee’, ‘your-text-domain’ ), $processing_fee );
}