I have an issue with not being able to pump more than 2-3 ounces at a time. I need to leave 4 ounces per bottle for my 4-mo old ds while he's at daycare. My local LLL suggested that I simultaneously pump and bf. I tried it this morning, and I did get an extra 1.5 ounces. For some reason, my ds chomped on my nipple several times. He's never done this before. Is this because the flow of milk was too fast for him? Any suggestions are appreciated.