Hi Samuel,
So sorry to hear you have experienced so much difficulty on your path. Everyone is different in how they react to practices and the process of inner purification and opening. Perhaps this is why in times past, practices were only offered to the very few who passed a long list of prerequisites (maybe lifetimes worth!) before being given powerful spiritual practices. Here we give it all, so each can choose. So much freedom to access powerful tools can be messy sometimes. I hope it has been worth it.
It appears you have inner silence (witness) well established, enabling you to weather the storms in your neurobiology and life. Now there is the question, will the fatigue finally give way to more positive energy in life?
You have managed everything well, given the difficulties you have faced. No doubt you will continue to do so, and the fatigue will gradually become less. Is the slow healing normal? Yes, it can be, if the imbalance has been so much for so long. Slow healing is still healing, and life will continue to get better.
My path has had rocky times in the past, but not to the extremes you have endured. You are in my prayers. Would you like to be added to the samyama healing list? It is going to be alright.
I hope others here will chime in with support.
The guru is in you. 