B12 Deficiency - are these levels really low?

I’ve been experiencing many of the symptoms others describe with dizziness, leg numbness and weakness, tingling fingers, shortness of breath, etc. My coordination definitely doesn’t seem as good as it used to be. I had spells of this before that lasts a few weeks gets better and returns. Often I wonder if I’m chasing the wrong thing.

I’ve been supplementing B12 for the last 3 years off and on and my levels have tested at:

March 2021 - 241 ng/ml Dec 2021 - 325 ng/ml Sept 2024 - 262 ng/ml

Are these numbers truly low? The doctors never think so but from what I’ve researched symptoms can present in this range. I take a PPI so getting my levels up hasn’t been easy.