Hi Tracy.
I have pernicous anemia as well. I take 25mg of compounded methyl B 12 every week for a year, then get my levels checked and if they are good, get one shot a month probably for the rest of my life.

I originally was prescribed cyanocobalam from the regular pharmacy but found out aluminum is a preservative in it and I have high aluminum levels so I had it switched to the compounded methyl B12 with no preservative.
It's helped with the tingly fingers and toes and has helped the fatigue some. I give myself the shots.
I hope you start seeing some improvement, and there's no permanent damage done.
Hugs,
Veg