My baby is 5 weeks. She breastfed until 2 weeks and then we ran into issues so I pumped exclusively. We just started. Breastfeeding again and she remembered! My question is she nurses for about 8 minutes then falls asleep. I wake her to go on the other side but she falls asleep too. How can I be sure she's getting enough to eat? Im so used to pumping and knowing exactly how much she's taking in.