Yes we also struggled big time with Craig's cpt, he is also 3 1/2, for the past year we have not done actual physical cpt, I know it sounds bad. What we do now is a restrictive belt that goes around his chest and restricts his lungs. What this means is that as he breathes in his lungs dont expand as the would normally and so the breath goes deeper into the lung and so getting behind any mucus, well thats the theory anyway. When you breath normally you only use a certain percentage of the lung capacity, so this belt and treatment increases the capacity of the breath. He keeps it on for 1 hour twice a day, he plays with it while on, outside on the trampoline if we can.
That is the other thing we encourage lots of physical play, trampoline, soccer, running.
Next clinic (next week) he will be getting a pep mask to try, and so that will be him learning breathing exercises.
Dont get me wrong, it took me a while to not think that we should still be doing cpt, and that we were doing wrong
<img src="http://img513.imageshack.us/img513/6210/florida2007077pm0.jpg">
craig with his belt on