OP
So I think he has low brain histamine and hypersomnia as a result. Hence dex and modafinil help. So worth trying l-histidine and niacin perhaps.Unfortunately that is not going to help because "Peat" is a very toxic diet. When things settle down I would look into the low toxin and low "vitamin A" diet.
If it were my family member I personally would start them on Niacin as Nicotinic Acid. Bill W tried to get it introduced into Alcoholics Anonymous because he saw how powerful it was to help break addictions. Also Scientology uses it to help people break addictions when they join.
Both these two caused me damage. They can be helpful short term but I personally would not lean on them long term.
Reading some of hoffers work has lead me to think this…