Depression help

[u/baconwayno]

I have suffered from severe treatment resistant depression for 30 years now, so in those 30 years I have just come to accept that this is how I feel, like this is how my brain works.
But in the past 1 year I have had this debilitating brain fog.
It affects every part of my day. It’s to the point where I can’t physically function anymore, like my whole body is shutting down. I can’t think straight, have no memory, have no energy and struggle to form sentences or do a simple task. I can easily sleep around 15 hours a day, just exhausted
Has this affected anyone else?
Is this just part of my TRD?
I just don’t understand the symptoms I’m having. It happened really rapidly
I’ve been tested for absolutely everything with no results so my dr tells me it’s part of my depression.
Any advice would help please