sadhana is priority on my list also. #1. without it....life can be a bit tough..yes ?
i have been 'struggling' with this same issue...i was becoming exhausted...yet,,making such Progress !!

i started falling asleep 1/2 way or so during kriyas....

i figured...this was a Hint...of some sort.
our Spiritual Routines...seem to take a natural course of their own . if It is Needed....if Communion is a bit Dire..then It happens. no matter where we are...not matter how full tummy is...or outside circumstances...it just Happens. if we fall asleep....then we fall asleep.
there is much work done by soul and God when the body sleeps.i have noticed...that when i fall asleep during One on One with God....the meditation continues...

it is done...in or at a deeper Level.
another thing i have learned...do not fret if we happen to miss a routine...it will all Balance Itself.
(((Hugs)))
Life is just too tough without our sadhana. I haven't really had too much trouble with falling asleep during meditation, though it has happened on the odd occasion. For me sleep was an issue for years, insomnia, and I've now found how much this disturbs balance since my sleeping patterns have been more healthy.
I think your blessed to have this one on one experience. Awareness of a Presence, on a very deep level, has been fleeting for me at best. Of course there's been the amazing feelings of bliss and joy, unexplainable to anyone really, the bliss that comes with deep kriya practice, but retaining awareness of the Self, beyond ego (self) seems an almighty task?