How often do you usually get square jaw Botox?

My jaw muscles developed when I chewed food, and it seemed like my face shape was gradually turning into an angular square, so I tried square jaw Botox for the first time.
About a month after getting the injection, the soreness disappeared and my jawline became really slimmer, so I am 100% satisfied with the effects of the Botox.
However, since jaw muscles are used daily due to dietary habits, I heard that they return to their normal state over time. I am concerned about when I should schedule my next square jaw Botox treatment.
I'm worried about developing resistance if I get it too often, and my muscles growing back if I get it too late, so finding the right Botox interval is trickier than I thought.
I'm curious to know how often Maypure members typically visit the clinic for square jaw Botox injections to maintain a slim jawline.