This is an awesome project you've undertaken here. If you'll rummage through the past posts on this forum you'll see about 800 nearly identical "I hit my head and I don't know what to do" threads... it seems like everyone goes through the exact same procedure of escalating frustration, at least in the first few weeks following their injury, that is.

Things I've tried:

Accupuncture - I did this closest to the time of my original injury. It rarely accomplished anything terribly impressive, but one time (out of the probably 30 times I did it) I had some HUGE benefits come out of a session (significant expansion of peripheral vision, clearer thoughts, etc). Hard to evaluate how permanent those effects were, as I was living a pretty degenerative college-style life at that time, so any depreciation in results could have easily been explained by my continuing to (stupidly) ingest alcohol. I also did basic chiropractic and this other therapy called "Matrix Repatterning" at this same time, but those never reaped any benefits for me.

CTScan - Showed nothing. Other than knowing that there wasn't any visible damage to my brain mass, this did nothing for me.

Lexapro (SSRI/Anti-depressant) and Xanax - Had a nervous breakdown at one point, was put on these afterwards and took them for 3 months or so. They definitely helped in getting my brain to stop exploding (which was useful), but other than that the benefits were nil, so I weaned myself off of them shortly thereafter.

I did this light therapy which was EXTREMELY helpful. It's a therapy designed to alleviate the emotional residues of trauma, and I had pretty pronounced PTSD, so it helped with that end more than with the physical brain, but I am absolutely certain that the therapies I tried on my brain later wouldn't have been anywhere near as effective had I not done this therapy first. Bar none, I feel that this was the single most important element in getting me from where I was a couple of years ago (undeniably horrible) to where I am now (pretty good).

Craniosacral therapy - Did this following the light therapy for about a year (once a week). Really got my brain turned back on... extremely, EXTREMELY helpful. Chronic pain diminished significantly afterwards, and experienced marked improvements in memory.

I'm also on several supplements to help various parts of my endocrine system work properly. These have also been very helpful.