I bought the Nuby electric pump and had my first go at expressing today. The hv had told me to wait until dd had finished her feed, then express from that boob.there was a 20 minute interval between dd finishing and me being able to put her down/ set it all up. I pumped forc15 minutes before the flow stopped completely and all I got was one measly ounce! Any help will be greatly appreciated! Dd has now woken and is on the other boob!