Welcome to NeuroTalk, Beachbum...

You are off to a good start. But check that magnesium and
make sure it is NOT OXIDE form. That type is not absorbed and is passed in the stool.

I think you would do better on active methylcobalamin oral 5mg a day on an empty stomach. The shots don't work well for everyone and they are not the activated type of B12 either, unless you get them compounded especially for you.

Anyone who drinks alcohol or suspects a connection with alcohol should try the improved B1 called benfotiamine. You can get this at iherb.com or Amazon. Most of us use the Doctor's Best brand. Start at 300mg a day and see what happens. After 3 months or so you can drop to 150, if your improvements sustain.

People getting B12 shots should have testing done to see if they are really working. Don't do any shot or supplement for 7 days before the test. You should be above 400pg/ml...which is the new cut off point for "normal". Don't accept "normal" comments from a doctor. Get your own numbers.