I find that my shoulders feel a lot of strain when I do pressing movements, say a shoulder press with overhand grip, or even a bench press when the bar or dumbells are near my chest. So in those positions I feel rather weak, and I am worried that I will injure myself as I use heavier and heavier weight. For example, even with a shoulder press, as I start to lift heavier and heavier weights, the stability demands my make my grip wiggle a bit and put my shoulder into those awkward positions.
So I was trying to think about how best to improve my strength or resilience in the shoulder positions where I am weak. Like I can't really train heavy in these unstable positions, since that is a recipe for injury. But I need to build some muscle in those regions to help protect myself.
In watching some of the John Meadows videos, I saw that he suggests partial reps in some of the ranges where he was weaker. For example I would do a shoulder workout with regular heavy weight in the comfortable shoulder zone, but then for the last set I could do more high intensity methods like a dropset. So during this last high intensity set, after my dropset, would it make sense to add partials in this unstable region? That would let me use lower weight but hopefully still have a growth effect.
Of course, I don't want to guess about stuff like that, hence I am asking for guidance from people with more experience than myself. I could try this idea out, but I could also end up getting the injury that I am trying to avoid. Hence the question is how would I build stability in the unstable or weaker zones of my shoulders? Would this partial rep idea make sense or are there other better ways?