So is it agreed upon that cardio on an empty stomach is the best way to target fat? I will be cutting in the near future, and have about 25lbs of muscle I did not have before and do not want to lose it obviously.

Also how long should I go for, I know that after a while you start to burn muscle and again I do not want to do that.

Also in general should I adjust my workouts in any sort of way with reps/weight etc during this phase??