Not saying you cant or even you shouldn't, but you are more likely to cause harm by doing more at once than spreading it out. Like I said dont even consider lst to be stressful if you're doing it correctly. Everybody has different styles, as long as get the results you're looking for you're doing just fine! I fimmed and lst'd together it's fine, but life sometimes less is more. Stay lifted.Ive fimmed and LSTd at the same time even the same week. I see no reason why a healthy auto can't handle it. Both stressors are triggering vegetative responses in the plant.