Most of the time, falling asleep while in the phase can be overcome by a constant awareness that sleep is possible and detrimental to a continued phase. A practitioner must always consider the probability of falling asleep and actions must be carefully analyzed to ensure that they are based on real desires and not on paradoxical notions, which are common to dreams.
Periodically asking the question, "Am I dreaming?" while in the phase helps appraise situations and the quality of the actions being performed at any moment. If everything meets the standards of full phase awareness, actions may be continued. Asked on a regular basis, this question becomes habit, automatically used while transitioning to the phase state. If you keep asking this question regularly, sooner or later it will arise automatically at the moment when you are actually transitioning into a dream. This will then help one to wake up, after which it is possible to continue to remain in a full-fledged phase..
The frequency of the question should be based on a practitioner's ability to consistently remain in the phase. If a phase usually lasts five to 10 minutes or more, it is not necessary to ask the question more than once every 2 minutes; otherwise, this question has to be asked frequently, literally once a minute, or just a little less often.
There is another important rule related to resisting falling asleep: no practitioner should engage or participate in spontaneous events occurring in the phase. Events that are not planned or deliberate lead to a high probability of being immersed in the side action, which results in a loss of concentrated awareness.