When she is waking after the 2-3 hours is she actually properly waking up or is she just between sleep cycles and may resettle on her own? I ask this a very early on with DD I'd pick her up and try and feed pretty much every time she stirred as I thought she needed me and didn't want her to cry and wake DH. After a while I decided to just 'wait and see' and often she'd resettle. If she didn't then I knew she needed something....