When pumping, I will use my other hand to press the top, outer side, bottom and inner side sequentially, to get all the milk out. I change the area i’m pressing when I see that the milk stops shooting out, then when I press a new area, milk shoots out again.
Emptying the breast is important for 2 reasons: 1) preventing milk retention that can cause blockage/mastitis, 2) maintaining your milk supply.
rach