Pedro,
If I were to go back to the basic level, I feel cardio wise I would step back too far.
Looking forward in the program, it seems like the main differences in the beginner and intermediate levels are duration of cardio, and the first CMF day of the week is changed to the Z3/ME workouts.
Maybe it would be better for me to just switch those ME/Z3 days for CMF, at least until I get back to CMF level 3? Then I’m still building aerobic base at the intermediate level, but giving time to rehab the strength. Something of a hybrid between intermediate and beginner level.
Thoughts?
-aaron