i will tell you what worked best for me when i was pumping.
first up, if you pump at a time when you are too tired or under stress, you will not be able to get as much milk as you would otherwise, so make sure you are relaxed and rested. also, make sure you have been eating well. if you find it difficult to pump, place a warm damp towel on your breast and then pump, as it will make the process easier.
Read more