R-Epoch - Recent Experiences?

I saw a couple of threads on the R-Epoch regimen. I was curious about other people's experiences. I began the regimen on January 24, in the hospital, but have done my last two rounds as an outpatient with the pump. I had a CT scan after my first two rounds which showed a 50% decrease in the size of my tumor. I'll have a PET scan after round 4 to see where we are.

My understanding is this regimen typically involves 6 cycles. But I've also heard they typically do 1-2 cycles after you get a clean scan to ensure everything is completely eradicated. So I'm wondering if anyone who has had this treatment has had more than 6 rounds, or if 6 rounds usually does it?