Hey guys, I have been doing 12 reps for around a year in all excercisces.

I am now cutting up

should i stick at 12 / 15 reps or go down to 8 - 10?

I really am not getting good workouts even though I am cutting up at the moment my progress in the gym is at an all time low.

I have never done low reps ever in my life.. i am only 19

suggestions fast please ppL!