Got it got it. Yeah the best thing we can offer right now is either:
A custom JS solution that manipulates the cart -> complex and requires basically high level theme development
A button that adds the product to the cart but the issue here is that we can't "remove specific item" from cart right now. We can "clear cart" but that is likely not super helpful in this instance 😆
We'll keep working to make this better. If you find a clever creative way to do this let us know!