Botox for TMJD

I am curious if anyone in here has personal experience getting medical botox for their TMJ issues and if it was worth it. I’m a chronic teeth grinder and jaw clencher and I’m sick of just being told to stop stressing and then it will stop. I have been a teeth grinder since my mom could ever remember and it’s only gotten worse. I have extreme symptoms that cause me a lot of pain and interfere with daily living sometimes even. Just wondering if the botox is worth it and how often you personally get re-injected.