Early in my Orthodox journey, I took Jesus' words in John 6 to heart and kept communing for a while at my old Presbyterian church (and an Anglican church when work shifts wouldn't allow attendance at the pressy church). I preferred to commune in the Anglican church as they believe in the real presence of Christ in the bread and wine, the Eucharist was central to and celebrated at every service.
A few months after I started attending Divine Liturgy, it hit me more fully that the Eucharist IS the Body and Blood of Christ, a grace-filled mystery full of power, and the consequences of partaking unworthily. Also around the same time, I became more aware of the gravity and impact of my sins. I could no longer approach the chalice in good conscience without an opportunity for repentance and confession. I looked, but could not find a framework for confession and absolution within my old church. It soon became obvious to me that there was no half-way, make do solution before coming Orthodox; it was all or nothing. I stopped communing there and then and resolved I would not commune again until I was Orthodox. That was 8-9 months ago.
A few weeks later, I made a conscious decision to stop attending non-Orthodox churches altogether. In the Anglican church, refusing to commune became awkward; in general, going to non-Orthodox churches only lead to confusion, a sense of emptiness and resentment of my former faith tradition. Now, I make do with prayer books, OSB, Saints of the day and other readings in between occasional trips (2-3 months) to
the Orthodox Church.
Fortunately I do not have a faith-divided family situation to contend with, I feel for those who do.
God willing, the wait may nearly be over; Father is meeting with the Bishop this week and hopefully will come back with an answer as to when and how I will be received into Holy Orthodoxy. I can't wait to be part of Christ's Church and to be joined to Him through His Body and Blood.