*trying* to be funny. Obviously didn’t hit that mark.
But to be clear, yes you can ‘give up’ the scholarship. It’s not actually awarded to you until successful completion of NSI, checking in, taking the Oath and signing the papers. You could just ‘not show up’ and fulfill those piece. But most here on the forums wouldn’t do that, either. They would call their POC and thank them for the amazing opportunity, but that you feel called to attend USNA.
It’s not an uncommon happenstance. Both programs are competing for the same candidates, for the most part.