pathfinder – Self-monitored sleep

Can a level 11+ psion who is about to fall asleep naturally manifest a clear schism and have to fall asleep (or deliberately fail in a saving throw of the sleep spell? ) before the end of the schism, use Kept dormant on his already dormant main mind, manifested by his secondary spirit before The schism ends?

(The last sentence of Guarded Sleep made me wonder how that would be possible.)