Burning Mouth Syndrome: Anyone had success with compounded mouth rinse

I am a Mayo patient in Jacksonville, FL and have been suffering from BMS since January 2021. I have tried every natural remedy and food modification that the Mayo dermatologist recommended, with no success. The capsaicin rinse was not tolerable and caused mouth ulcers. My Mayo doctor just prescribed a compounded Clonazepam mouth rinse (.1mg/1ml) to "swish and spit" up to 3 times daily (5 ml at a times). Has anyone found success with this regimen? If so, how long did it take for symptom relief and at what dosage?