The first boundary is the hardest. After that, people start learning the shape of you.

The first limit is the expensive one, because it arrives as a surprise and everybody has to adjust around it. After a few repetitions it stops being an event and becomes a known fact about you, which is much less work for everyone involved. People are rarely trying to push past your edges; they just do not know yet where those edges are. Showing them is a one-time cost.

Pick the limit you most want people to know about and say it once this week. Then say it the same way next time, with no extra explanation.