Remember that cognition can be exercised just like muscles. I know you aren’t big on brain training games, but something like a crossword or candy crush or something might help. I’m sorry you are having a down spell. It is never fun to be reminded of your limits, or to have them shrink.
I found them helpful, but at the end of the day I’d spend an hour on one and feel like I accomplished nothing. That’s why I switched to auditing more courses at edx.org and also working on restoring my French fluency. Learning a new language and online classes are great (and productive) ways to sharpen the old noodle back up.
These are massive amount of l-theanine dose per day. No wonder your positive symptoms coming back as your body get used to this massive dosage and tolerance build to it requiring more and more dose to feel same effect.
I suggest you to slowly taper this l theanine dose. It may require you to change your psych medicine but remaining in these massive dose is not the proper way to manage positive symptoms…
I feel like I’m taking a step down also. It seems like I’m slipping in every way possible. But, I increased my l-theanine dosage to 1,500-2,000mg a day, and that seems to help with my paranoia and hallucinations.