I believe zinc overdose (possibly via copper deficiency) happened to me and caused my fatigue problem -- suddenly, about 5 hours after waking up, I would go fro

I believe zinc overdose (possibly via copper deficiency) happened to me and caused my fatigue problem -- suddenly, about 5 hours after waking up, I would go from awake to overwhelmingly tired in about 10 or 15 minutes, and physically not be able to keep my eyes open. After an hour in bed I would drag myself back out but feel sluggish and useless the rest of the day. I stopped taking zinc and it got better pretty quickly. I can't prove it but I believe that's what it was.