Yes. Being a sufferer of mental health problems as well, I've had long periods of dreamlessness too @Michael2Wolves. And looking back I believe, for me at least, that it was directly related to the deep depression and hopelessness I was enduring at that time, day in and day out. Maybe the brain doesn't want to dream or maybe the dream recall part of the brain just stops functioning properly under those circumstances. I don't know, I'm just speculating. 🙏