You do realize you have posted in the meditation forum?
Bodhi = awakening.
Seriously, don't worry too much about attempting to maintain awareness into sleep.
Sayagi U Ba Khin, used to have a saying 'work while you work and play while you play' which is to mean that you meditate during periods set aside for formal meditation and engage in other activities (work. sleep, etc) when it is appropriate to engage in those activities. When you mature in your practice, you will naturally be able to extend meditative awareness into other areas of your life. And until then, don't sweat it.
“No lists of things to be done. The day providential to itself. The hour. There is no later. This is later. All things of grace and beauty such that one holds them to one's heart have a common provenance in pain. Their birth in grief and ashes.”
- Cormac McCarthy, The Road
Learn this from the waters:
in mountain clefts and chasms,
loud gush the streamlets,
but great rivers flow silently.
- Sutta Nipata 3.725Compassionate Hands Foundation
(Buddhist aid in Myanmar) • Buddhist Global Relief