There's no right or wrong answer when it comes to whether or not you should use a pacifier with your second baby. It's really a personal preference. Some parents find that their second baby takes to a pacifier more easily than their first, while others find the opposite to be true. There's no harm in trying a pacifier with your second baby, even if your first child didn't take to one. If your second baby does take to a pacifier, it can be a great way to soothe them, especially if they're going through a fussy phase.