I like to vary what I do in the gym, partly because helps my motivation, and partly because I like to periodise my goals. For example, I am currently following the BBB template, which I consider my volume phase. I use this to work on baseline strength and endurance. I'll soon switch to a low rep assistance template to work on power. Then I might to for a bodyweight template if I wish to bring up my athleticism, or an explosive template. Then I go right back to BBB again and start the cycle again.
How often would it be suitable to switch these templates? I have been switching them every 2 cycles. 2 cycles BBB, 2 cycles power, I'll often do just 1 cycle bodyweight then before starting again. Am I switching around too much?