Just speaking from my experience here. When I was receiving any kind of block, be it stellate ganglion, lumbar or cervical, I received them once per week. I was always told that they are more effective that way as you do not want too much time to lapse in between.

When I was getting stellate ganglion blocks when first diagnosed with RSD (in my face) in 1991, I was getting two per week. Those, in combination with meds, put me in remission for quite a while. Later, when I developed RSD in my hand and spread began, they tried them once per week, but it was a year after injury so they didn't help.

Good Luck!!
Nanc