When siblings disagree about aging parent living alone and his/her safety, nothing moves and the parent is the one at risk
The sibling disagreement pattern in elder care decisions is incredibly common and the outcome is almost always the same: nothing gets decided, time passes, and the parent is living in a situation that no one has actually committed to making safer. Everyone has an opinion but nobody has a plan. The families who resolved this, how did you get to a decision everyone could actually live with? Was there a specific conversation, a specific event, or did someone just take the lead and everyone eventually aligned around it?