I don't know if this will help at all, but I thought I'd offer it. I've seen this happen one time before. It was as if somehow the person's etheric body got stuck outside their physical body and could not make it back in, for whatever reason. It was like it had gone so far out into the ethers that it had gotten a bit lost or something. It was like key looking for the keyhole. The person was rather blank, almost like emotionless. It took some shamanic work to go out and retrieve this part of them. And then the person was ok again. Literally, the blood started to animate again.
Perhaps that might help you. It's a different approach, I know. But it seems that if you could have found a way back into yourself via centering or doing stuff or exercises by yourself, you would have already. So maybe it is time to consider some extra support to help you?
Hope this helps.