[James98]

Not sure if Jennifer is very active here now. But the nerve damage seems to be near the armpit. So the trick is to push the domes away from your armpits. This is generally desirable anyway as you want to center the dome over your nipples, a surprising number of women like to have the cup high because they want to concentrate on the upper boob because that is what people see. However the result is that the nipple points down which most think is less attractive than pointing out.

Massage with oil before pumping, use padding, pump in 15 minute sessions or less. Drink lots of water. Good luck