For the lat 3 months, one week in each month, I have been pumpin light (half the weight) and double the reps.

I also completely revamp my workout during these light weeks to shock the muscle and continue the new program throughout the month until the next light week.

I have had improvement in both muscle definition and size and tbh my motivation and focus has also got better. I like to try out new workouts and this now gives me more structured approach to do so.

Would this have any long term negatives to either strength or growth?