Option 2: If you can't or don't want to pump at work, you can gradually replace daytime feedings with formula while you're still at home but continue to nurse at night and in the morning. Remember, though, that if you don't nurse or pump during the day, your milk supply will diminish.
What Are The Advantages Of Pumping At Work?
Pumping at work stimulates your milk production, so you'll have plenty of milk available when you nurse. Your baby will have the health and nutritional advantages of breast milk even when you're not there. What's more, pumping can be a wonderful way to feel connected to your baby during the workday.
You'll save money by not buying formula (or not as much of it). And you may avoid missed workdays, because breastfed babies are half as likely to get sick in their first year as those on formula.

One of the best things about continuing to breastfeed is coming home to a baby who wants to nurse. You get to snuggle right away, re-establish your bond, and nurture your baby in a way no one else can.
To make sure your baby will want to nurse when you get home, ask your caregiver not to feed him during the last hour of the workday, or to feed him just enough to take the edge off any hunger. Then you and your baby can look forward to a warm reunion every day.