Is it better to get square jaw Botox again as soon as the effects start to wear off?

I'm always the type to wonder how to schedule the next treatment after getting it done once haha.
I thought that if I got square jaw Botox once and was satisfied, I could continue with maintenance, but I wasn't sure if I really had to schedule it every few months.
Rather than blindly repeating the treatment according to a set schedule, I would like to receive it when I feel my jaw muscles are developing again or when I start to worry about my lower face.
I'm wondering if it's okay to receive it like that.
Even when the effects of the square jaw Botox wear off, my jaw won't suddenly go back to its original state one day, right? Haha.
I'm wondering if I can feel the strength gradually returning when I clench my teeth at first, and if my facial contours return to their original state over time.
For those who have had it done a few times, do you know it's time for the next treatment just by the feeling of your jaw tensing up before looking in the mirror?
I find getting Botox too often a bit burdensome, so I would like to wait until the effects have fully worn off.
Conversely, I am curious if it takes as long as the first time if I wait too long and get the injection after my muscles have fully regenerated.
Also, I am curious if there are people who feel that the duration of the effects has changed compared to the first time they receive square jaw Botox repeatedly.
I also have a habit of clenching my teeth, so if I don't break this habit, I think the duration of the results might feel short.
For those of you who have consistently received square jaw Botox for a few years, what criteria did you usually use to schedule your next treatment?
I wonder if it was sufficient to make a decision based on my condition rather than the exact number of months.