I was...
felt **** for years.
Had injections until moved to Wales.
Gp there stopped them.
Then got private infusions.
Moved back to England.
Though would just let levels drop and get the necessary injections back. Stopped any supplements, infusions.
Levels went down.
Then levels climbed, climbed and climbed. Sooo high!!
My diabetes consultant said "it doesnt look like you have cancer"....
6 months later diagnosed with breast cancer.
Since having cancer removed 18 months ago my levels have stagnated at a level of 440 and not moved.
I personally think low B12 can be exasperated by processed foods... I was eating more processed foods during the time my levels were low.
I know how desperate it feels when low... my levels also improved once Incompletely banished processed sweeteners out of my diet. Apparently I had been diagnosed with sweetener intolerance in 2003!! I only found out in 2015, 9 months before the cancer removal...
I would definitely only eat unprocessed foods and check how much B12 you are having from your natural food....
Injections will help you feel better. Best to get yourself tiptop on intake naturally as well though..