What level vacuum do you use on the spectra? Do you ever use the massage function? How many minutes do you use it for?

5 minutes at least on massage function to stimulate letdown, more if you like, and the remaining 10 to 15 minutes on expression mode. I use level 4 or 5 because it's not recommended to use such a high level (10). The suction might hurt your nipples. While using the pump, do remember to massage your breasts at the same time so you can get more milk.