When did you start seeing the effects after getting square jaw Botox?

I was worried that my square jaw made my face look wide, so I recently got square jaw Botox. Since it was my first time getting the procedure, I was concerned about pain and swelling, but it was better than I expected, and the treatment didn't take long. I don't notice a huge difference yet, but I'm looking forward to seeing how my facial lines will change a bit as my jaw muscles shrink over time. For those who have received square jaw Botox, I'm curious to know how many weeks it usually took to feel the effects, and when the results were most visible. I'd also love to hear the experiences of those who are getting it for the first time like me!