You may find that it's easier on you to nurse your baby when you have a chance and then to supplement with formula feeding in between nursing sessions. (abckidsinc.com)
This worry very often leads to a breastfeeding mother topping up feeds with formula milk. (kaboutjie.com)
There are many different reasons to supplement with formula for breastfed babies like lack of enough breast milk production, lack of sleep, and the return of work for mom. (omaby.com)