Straight from the level 1 course manual:
"All good masters of Qigong have the same opinion. Choose one Qigong technique or form you like best and stay with it for a long time, even the rest of your life. You will build up your system. One day when you become very good at this form, you can explore around and see how other Qigong techniques can benefit you. When you shift often from one technique to another, you change your regulation system, which makes it very difficult to bring your meditation and your energy to a higher level."
So as you can see, switching techniques on a regular basis would not be a good decision.
