M68 5’10”, 228lbs, trying to tone after losing weight, not to bulk up (I’m still hoping to lose another 20lbs). I’m on month 3 of lifting on MWF schedule. Workout is about 15min elliptical to warm up & 30min lifting. I started with 1 set of 15 reps, worked up to 20 reps, and now I want to add weight while not reducing…