You don’t need anyone’s sign-off to set a boundary. It’s your property line, not a group project.

Waiting for agreement turns a decision into a proposal, and proposals can be voted down. Nobody else has to find your limit reasonable for it to be yours, since their approval was never part of how this works. Seeking it usually delays the thing and weakens it before it is even stated.

State one limit this week without first checking whether people will accept it. Say what you will do rather than what they must do. Then hold it calmly through the first round of pushback, which is where most limits get lost.