Entering a total autistic shutdown after trauma triggers and routine shifts

Hello everyone. I am a late-realised autistic adult (45), and I think my brain has just completely run out of processing power. After an intense summer of burnout, a massive trigger regarding past abuse, and a sudden shift in my daily routine yesterday, I had a grueling night of non-stop panic attacks and trauma flashbacks.This morning, I woke up in a total shutdown. I have completely lost my connection to the 'core of existence'—I have no interest in my usual special interests, my hobbies feel empty, and I feel an intense urge to radically isolate and detach myself from everyone just to survive. I am currently just trying to manage the bare minimum of physical survival.Does anyone else experience this total existential vacuum during a major autistic crash? How do you gently navigate your way back when your brain drops its power grid completely?