Easha - That's me that expresses 150mls. I usually do 200-250mls though. What are you using to express with? With Harrison, I used an Avent Isis and found I could barely cover the bottom of the cup with milk so this time around DH bought me a Medela Swing pump and it is brilliant. I also (try to) make sure I drink loads of water and I have been drinking Activite and eating the lactation cookies when I remember to make them. Basically the extra water is what seems to work for me... and to limit the amount of stress around me when I am expressing... if my kids come in and whinge or bicker I lose the flow and nothing comes out... when they leave me alone and I just read or watch TV I get a good flow happening and can get out 150mls in around 15-20mins.