There are a few risks associated with a keto diet. Those who need it for epilepsy have a valid reason to tolerate the risks plus, they tend to be children with strict supervision. When adults use the same keto diet, the results are varied.

I've read so many 'self proclaimed experts' who all seem to miss a few important facts. There is a lot of hopeful thinking and writing and conjecture.

I don't see anything that suggests value to a keto diet at your stage of PCS.

Why aren't you using the whole vitamin regimen for a few months to see if it helps ? There are no single quick fixes. It takes diligence and discipline.