I had long Covid for about six months before my stellate ganglion block by a Pain specialist MD in Anchorage, Alaska. It was an easy procedure. Within two weeks my blood pressure and heart rate returned to normal. The dizziness, anxiety, nausea and brain fog improved slowly over the next month. The symptoms that did not improve were depression, fatigue, and post exertional malaise so I had another block two months later. I also had neuro feedback treatments for the depression after Antidepressants did not help. I did 20 minutes of light exercise(walking) daily and got plenty of rest and healthy food but still managed to lose 30 pounds without trying to. I had a strong group of Christian women praying with me and encouraging me. After 11 months of Covid I felt like my normal 66 year old self again. I hope you recover soon too.