I chose to stop my SL methylcobalamin and start injecting methylcobalamin.
I started with 1 mg three times a day. After three days I found that sometimes I could feel that I had used up my B12 between injections and went to 1.5 mg three times a day and found that to be disruptive and decided that was most likely due to my body healing too fast. After 3 days I started injecting 1.25 mg three times a day and that seems to be a good balance.
Once I stabilize on the 1.25 mg then I will work on what changes I want to try.
The all but instant feedback from my body is new and in part from my experience from past trials. It is more about my neurological system healing and giving me better feedback.
It is a factor that I am more confident due to my experience with successful self treatment.
(See profile for other supplementation I use, which has been consistent for 6 months other than eliminating them each for a short time to test if they were still having an effect. )
Not a medic.