Sorry to hear your SGBs aren't helping like they have for others! I find my recovery with the help of SGB has to be in concert with other modalities to reduce anxiety and esp to help with good sleep. How do you sleep? Getting consistent good sleep is one of my challenges which can undermine the great effects I've gained from just my first Stellate Ganglion Block 2 months back. After three years of always getting tremors, brain fog and migraines the SGB has started to break up the "dying sensation" cascade effect that C19 left my nervouse system habitually over-reacting too. I'm going to ask my doc for a CPAP to help me sleep better.