Yes, you can formula-feed at night—and enlist a partner’s help—and breastfeed during the day if you’d like. Keep in mind, you might still need to pump during the night depending on your supply and how full your breasts get when you give them a break.
“Supply and demand is important, because the more you take out, then your body knows how much you need, and if you need to make more milk, you just keep taking out more milk,” says Kimick. “If I have moms that we know need to increase their supply, we'll always have them either pump after a feeding, or [recommend they pump] on the opposite side when baby's on one side. That actually helps with production.”