I'm still struggling to sort through your post. My cognitive struggles make it difficult. I'm not surprised the EEG did not show anything. Absence seizures rarely show up. A qEEG read by a true specialist likely would show some dysfunctions. But,.... Even in the US, it is difficult to find a good specialist.

You might ask to try olanzapine. It can help you with weight and some of your other symptoms. It is not a long term med for most but can help with hard times.

Have you had any opportunity to lower stress levels in your life ? Stress is a killer for people like us. Surviving TBI is often about what we do in our lives rather than the meds doctors prescribe.

Did you read the thread about Debbie Wilson and her success with CBD oil (canabidiol oil) ? It may be worth a try if you can get it.