Try the chord first starting with the pinky barred and then add the other fingers/notes of the chord. From the bottom up. That was working for me but it puts a lot of strain.I have the same issue; I can only place the pinky on the high E. Now I just came across that I can use the pinky nail side of the pink to bar it... it is very painful. I doubt I have seen anyone try this method... I will try this method for now and see if I can gain some tolerance.
It's the G minor chord right?