You seem to know as much as Sally Pacholok, the auther of Could it be B12? But just in case your interested she has a new blog, I just found it yesterday.
www.fightB12deficiency.blogspot.com
Iam making one more attempt at getting the shots, I have an appointment today with a DO who gives b12 shots in his office. Although my level seems to be rising, I guess I am to impatient to wait. If he dose not see a reason the give them go me than so be it. I will just do as you say, continue with the methly b12 and add other b's and suppliments.