Paul,
Once you have completed the course, take a break from it. A week or so. Then go thru it again and you'll be amazed at your progress.
But, take a break means from doing all the steps. I'd keep practicing the PhRing technique, just not activating or previewing or any of that. Just doing the technique. For some reason, just doing the PhRing technique brings about all kinds of changes. Maybe it all has to do w/ forming the neural connections and feeling relaxed which comes from practice.
During the day, work on using peripheral vision when walking or talking to people.
And, work on learning to breathe from your diaphragm if you can. There is nothing so relaxing as this type of breathing. It can relax you almost immediately even in the middle of stressful situations.
good luck