Actually, I have enough milk for the baby caused I can bump around 4-5 oz per 3 hours. But my baby will fall asleep after the first 5 mins sucking. No matter what method I used, he won't wake up, even though I wake him up, he will just "fu hin" me. If I bump the milk and place it in the bottle, he refuses to drink as well. So, I have to 人奶+奶粉.