Breastfeeding moms are especially at risk for energy-draining dehydration. To keep your energy levels and milk production up, make sure you stay well-hydrated. You can vary your options and meet some of your fluid requirements by drinking juice and milk. But be careful when it comes to caffeinated drinks like coffee or tea. Have no more than 2-3 cups a day, or switch to decaf. Caffeine enters your breast milk and can cause your baby to become irritable and sleep poorly.