How to keep baby awake while feeding?

Karen

My daughter Charlotte is a great feeder... when she's awake. I've tried bouncing her, burping her, tickling her feet, undressing her, and even a baby wipe across the face, but she ends up falling asleep no matter what. What have you other mommies done to keep your littles feeding?

P.S. inverted nipples suck, but nipple shields are a god send!