First I have written here often that the more B12 I supplement the less I suffer. That is not an error. However it may be the frequency as whenever I have increased there has also been an increase in frequency.
Second I have written that whenever I increase there is a uptick in how I feel followed by a period of time that my body adjusts and starts to heal. It may be that my body experiences an uptick and heals and then after healing adjusts to again being starved for B12. In effect my body has more B12 and now can improve with more B12.