Tingling in feet and legs

Welcome @icohen, I do believe there is a connection but this is something you need to discuss with your doctor, especially if you are taking supplements. Here's a reference article on the topic of your question:
-- Association between neuropathy and B-vitamins: A systematic review and meta-analysis
https://pubmed.ncbi.nlm.nih.gov/33619867/
You mentioned you had a high reading of 196. Which Vitamin B was the result for? Is there any reason you are taking Vitamin B supplements?

Neuropathy of feet and sometimes lower legs...but mostly my toes, oh wow yes!
This malady that can wake me up or keep me awake---started after my 3rd bout with Covid. (Also, I canNOT get any more injections-- of any kind-- because I became anaphylactic (went into shock) after second initial Covid vaccination. BTW: It's the polysorbate 80 and/or polyethylene glycol (PEG).. now included in EVERY stinkin' vaccination or booster administered in the US. Ugh!
-- ok, sorry about my rant-- back to neuropathy:

My neuropathy occurrences are greatly reduced when I'm taking Methylcobalamin (B12) via injection into my thigh--self-administered--all is prescribed by my UCDavis MD who also trained with Dr. Andrew Weil. -- I have the MTHFR gene which often requires regime of methylcobalamin 1x weekly injection.---For nearly a year, I've been caught up in healthcare of my elderly husband and my disabled son--both of whom I take care of at home. 2 days ago I RE-started the injections plus back meditating, watching my diet, & exercising. --- We can help ourselves a lot when we turn our attention back to what we eat/drink, watch how much time on computer (sitting long hours) we daily give away...what kind of 'news' we get sucked into...Please take care of yourself (in my case, it helps me and helps those I love)======== All the best to everyone.