Yes
I saw it with my own eyes 10 years ago. A step-relative.
A hospice nurse TRIED to off my mom 20 years ago - Thank God the nurse going off shift said something. A supervisor was called away from her Memorial Day picnic to remove the offending nurse. We all knew Mom was dying - no one was going to push her!
Mom died peacefully the next morning.
Later, when we filed a complaint with the State Licensing folks, we were told that she wasn’t going to do anything that was outside the way the prescription was written.