Every time you get drunk, it is like getting hit in the head again.

I have a hard time offering help to someone who gets drunk while still needing to recover from Post Concussion Syndrome. Understanding what symptoms are from the alcohol and which are PCS is very difficult. The pollution to your brain caused by the alcohol makes offering any advice like paddling up stream, the slightest break in discipline takes you backward and getting drunk is like breaking your paddles.

It sounds like your PT may be too oriented to stretching for range and motion rather than releasing spasming muscles allowing mobilization of frozen joints. Until the vertebra are correctly aligned, it is hard to get the range of motion back. Do you have access to a spine rehab clinic with PT's and chiropractors and maybe a physiatrist with better skills?

You B-6 and B-12 are likely barely enough to help your brain deal with the alcohol. Are you taking any other vitamins or supplements?

I expect you already understand this but just need a bit of reminding.

Rest up. Get good nutrition and try to find some care that understands concussion oriented cervical care.

And wait to go drinking until after you have been symptom free for a few months. Even then, you should cut back on your drinking to avoid getting drunk or buzzed. You will risk a return to full PCS if you don't.

My best to you.