That's it really. I had my first go at expressing yesterday and gave it to my DS in the evening. He wolfed down the 3.5 oz immediately after breast feeding for one and a half hours in the preceeding two hours. (I seem to have lots of milk!) Afterwards he wanted to have even more from the breast. Despite this gorging, he still only slept for 3 hours. He is nearly 12 lbs, so a big boy and obviously likes his food. I was hoping to get my husband to give him a bottle of expressed milk at around 10 pm each evening. Any idea roughly how much milk I should be aiming for? I quite fancy sleeping for longer than a two and a half hour stretch and hoped that expressing a bit might help this happen.