Hi,
If you see a shipping method selectable on the checkout, it means that all the restrictions you configured in the shipping method are being met.
If you don't want it in the situation of the checkout, then you probably want to change the settings of that shipping method.
Now to be able to provide a precise solution, I would need you to provide precise instructions to reproduce the situation on your website and then that you provide a screenshot of the shipping method you don't want there, and a screenshot of the all the settings of the product in the cart.