B12, Am I too low or am I fine? - #10433

Hello, I am a 20 Year old male, 60kg 183cm. In my latest blood tests (Around half a year ago, but my diet probably still haven't changed enough) showed: - Low Folic Acid 4.7 ng/ml (Range 5.9-24) - 'Fine' but low Vitamin B12 211 pg/ml (Range 150-914) which the doctor and dietician dismissed as a problem once asked. - A momentarily low potassium (3.34 mmol/L) with pins and needles, difficulty breathing and pain around the heart half an hour after taking prescribed 'acamol-focus'. A value which was checked at the ER (They first thought I was acting) and was resolved a day later, The other levels for folic acid and B12 were taken within the following days. - Healthy CT scan with contrast (Checked due to chronic headaches). I have struggled for quite some time with executive difficulties, particularly initiating tasks (Studying or doing Work), I can plan and organize the tasks and time very well but can never get to execute them. My psychologist doesn't think I would get diagnosed by a psychiatrist for something such as ADHD or anything else if I went to one. I had a period with incredible stress due to a bad superior which showed heavy symptoms such as memory loss and brain fog, major chronic headaches and even harder executive difficulties along with a slew of other seemingly unrelated problems, Which started clearing away once I moved from him - yet the executive functions still remain a problem. With that the case, and assuming my diet hasn't changed enough to affect the B12 and Folic acid levels (So far I am in the longest streak of 5 days of taking multi-vitamin supplements for the folic acid and in general), I have read online that different countries have different reasons to measure the B12, That the traditional line of around 200pg/ml is actually to flag anemia but does not represent the affects of neurological symptoms of low B12 (Especially with low folic acid), And in Japan and certain European countries they actually flag it as high as 500's. I feel as though my doctor is a bit of an old grumpy "Wall" to talk to, and due to the nature of my work, I can't really change primary physicians. So I want to check if my concerns about the low B12 are valid, and are there any things I should try to improve the symptoms of the executive issues and 'stop procrastinating' (If there's even any relation to the prior data).