There is no scientific justification whatsoever to claim that an individual is consciousness on the basis that science has no idea whatsoever what consciousness is.
The individual can control the consciousness experience any time they like.They can decide to go within and they can decide to come back out again.This act changes the consciousness state experienced from an in the moment state of consciousness to an out of the moment state of consciousness.
The individual can therefore engage with the in or out of the moment states of consciousness any time they like or they can let this engaging and disengaging happen automatically.