Archangel and niaholt both give a god idea of the kriya at home and the full course lengthwise.
I find it very nice to read that others have the same experience as I've had, because I was already thinking that "it was me again"
I now go about the kriya at home every other day or - when not feeling to great - once every three days. I also do the yoga exercises, but not on a kriya day. The succes is in the long run, I have been told, so the key thing is to find a routine that works for you.
Despite the dips, I still believe this is a thing that all of us can use in our way to health. If you like doing the S&F/ meditation part of the ARP, this is something for you.