I grind my teeth really badly. How long does the jaw Botox last?

Lately, maybe due to stress, I’ve developed a bad habit of clenching my teeth really hard while sleeping at night ㅠㅠ When I wake up in the morning, my jaw joints are so stiff, and my lower face seems to be getting wider and bigger, so it’s really stressing me out haha. I went to the dentist, and they recommended reducing my jaw muscles, so I’m looking into dermatological procedures! For people who grind their teeth severely Botox I'm really curious if getting it will reduce muscle soreness and make my jawline slimmer ㅠㅠ If I get it once, will my muscles be reduced? Botox Maintaining effect Duration I also want to know roughly how long it lasts lol. Something that makes your jawline slimmer with just a short amount of time investment. Botox If there are any seniors who have been getting this consistently, I would be really grateful if you could leave plenty of honest and vivid testimonials about side effects like cheek hollowing.