Say there is a first moment of coming to self-awareness as a modification of a prior awareness. You would have to know what it is you were presenting or being presented with; in other words, it would be a re-cognition. This happens every morning when you wake up, but in that case the dream self is already there. When the dream self emerges out of dreamless sleep it alwas seems to have already been there, it's always in medias res - but surely that is a fabulation to cover over a more profound emergence?