I have not read this post carefully enough to be able to really understand it. And I’m short of sleep because of getting up early to attend a morning Presanctified Liturgy. So perhaps I cannot read it carefully enough until I make up my sleep deficit.
In that Liturgy, we indeed prayed the Prayer of St. Ephraim several times—with prostrations. And there were several other times for prostrating, too. And we received the Presanctified Holy Communion, which was a blessing indeed!