Maybe just ask yourself about it. Just ask, not really expecting an answer from yourself. Just wonder aloud... out loud. "What it happening?" "What is me? What is not me? What is this?"

I know that when reassociating memories //experiences or parts of self I would feel something - a flash back, a sensation, an emotion, and I wouldn't have any context or understanding of it. But over time it became clear and had a way of revealing itself to me.
So maybe try just being present with the feeling. Just acknowledge it and be curious about it. Accept it.
And see what happens.