Doctor mentioned after the test that he would have wanted to see B12 increase significantly and not just from 205 to 322 in one month.He suggested to continue the dose for around 3 months and asked to take b2 and b6 also and then if it is still low then go for injections.

Rose, you suggested increase b12 intake , increase from 1000mcg to ..?
Anything above 1000mcg is too high or may have negative effects?

Not sure on ferritin test , but her haemoglobin was ,if I remember correctly around 11.6 (low) in last test, before she started having b12.

She used to feel some kind of tingling,burning sensation in her nerves before she started taking b12, and it has not changed , does that mean anything?