I do not work within the system you mention, but perhaps you'd still like some general advice from a stranger:
I believe a part of your issue with meditation lies within the view you have of it, and that is indeed presented most often. That is, a setting of rhythm... but it's not properly specified whose or what rhythm, exactly. I believe people tend to have different circadian clocks, which are affected both by their inherent natures, their potential spiritual/psychological deformities, or their environment - there's more to this, of course.
If you are not a morning person right now, be it since you were a child or because you suffer from stress-induced insomnia, or some other secret thing, it is not good to force it too much. You can attempt it in various techniques and measure progress, but if a way won't work then it won't work. Either you will receive it at a better point, or the less appropriate choice was picked. The best way I've found for myself is simply feeling the right time via intuition. Call to prayer is universal in one way or another, even for rocks, but it's a matter of "hearing" it.
If your intuition isn't very good, try analyzing your habits and see if there's anything that is arguably bad or a negative influence. Not just on sleep, but on yourself in general - do you chug 5 cans of monsters at once, or do you torture yourself with bad emo songs when you're sad?
Miasma, even as habit, can block some aspects of you, in my experience. If something haunts you, it will feed on your vitality - which is part of the mechanism of meditation, though in various ways. This is not to mention will - are you surrendering to any forces that feel beyond your control, except for fate itself? This may also cloud your vision, though it could be many more things except these two.
It is usually danced around, but your life and habit must at least begin to align with the axis you have by nature, and the universal axis itself.
Again, purely from experience. It is not extensive experience, and I am not you in perception, but it might help. Good luck.