How many Botox treatments are usually recommended?

I've been stressed about my facial contours lately, so I've been looking into Botox. Haha. I used to think it was just a treatment for people with good skin, but these days, so many people around me are getting it done naturally!! I especially heard that a lot of office workers get jaw Botox, so I've suddenly become interested. ^^

But what I'm most curious about is the recommended frequency of Botox injections, haha. It doesn't seem like it's a one-time thing, but everyone seems to have a different routine regarding how often they get them. Some people say they get them consistently every 3 to 4 months, while others say the effects last just after the first few sessions, so it's really confusing. ㅠㅠ

I've seen a lot of posts saying that with Botox, repeated injections reduce muscle size, which gradually extends the duration of the effects :) So, I've heard that even if the effects are short-lived at first, they last longer later on. Is that really true?? If so, I'm also curious about how often I should get treatments in the beginning!!

I also want to know if the recommended number of Botox injections varies depending on a person's face shape or muscle mass. Haha. I have a habit of clenching my teeth, so I think my jaw muscles are a bit on the developed side. My friend said that people with my type tend to respond well to Botox, so I'm actually looking forward to it.

But then I got a little scared after reading reviews saying that getting Botox too often can cause hollowing in the cheeks ㅠㅠ I want to maintain a natural look, so I was worried about getting overdone!! That's why I think I understand why choosing the right clinic is important :)

When I read Botox reviews, I see so many people who are highly satisfied, so I'd like to try it at least once. ^^ If anyone here is getting Botox regularly, please let me know how you were usually advised on the recommended number of sessions.