Hi there! I'm starting work again soon, and I will be pumping there also hopefully twice a day. I've noticed recently though, that it takes so long for me to pump out all the milk. I'm not overly full, but it just doesn't seem to ever stop. Is there a safe way to speed up this process? I don't want to end a pump session before it's done because I'm afraid it will leave out the hindmilk. I'm a teacher, so I can't be away from my class too long and I only have 30 min for lunch, which is about how long it takes. I have a Medela PIS.