I get occipital nerve blocks. Mine last 3 months. @deniseleann, your 6 months is out of this world wonderful. This goes to show that not everyone will experience the same results but, some relief is better than no relief at all. I would suggest asking your doctor about this also.
I have to add that I also get an auricular nerve block at the same time, as my pain is in 3 distinctly different regions. Good luck to you.