Woocommerce checkbox issue

In default WC checkout page there is a checkbox for different shipping address. When box is checked form appears, when unchecked form disappears.

What I need is to convert this checkbox in 2 radio buttons. By default first radio button is checked and form is hidden, when I click second radio button form appears...when click again on first radio form disappears.

How can I do this?

I did try to edit code inside form-shipping.php but I can't get it to work.