hi you got to be very hard working, not more than 3hrs so you count how many time per day you have to pump. for the start you have to keep pumping and cos if you are not good at latching you have to keep pumping. the frist month i latch her in the day after latching i pump about 10min depend on the latching and you can feel you breast is it soft and light. then at night i pump out, how much? well not always the same some time it can be about 60ml or 150 or even more for both breast. And really dont go and bother how much you can pump cos it will stress you. you can write dwn how much you pump each time and how long you latch her on how many time you feed your baby and how many time your baby poo as a guide line till you are ok with your breast feeding.
Now i do it in a demand base so how many time i really dont count cos im pretty ok now. hope it helps you.