Suggest however that Darcy pump at the regular night feeding time when you're giving formula... think I remember reading that keeping a regular schedule is important to both milk production and to her comfort. SO glad you found something that will hopefully keep helping you both get some uninterrupted sleep. When she gets a little older (not sure when -- ask pediatrician or look it up), you can also add a bit of cereal (like the baby rice flakes) to that evening bottle.