3. Ask For Flexible Arrangements
More and more companies are allowing employees to work from home for periods of time. If your company fits this description, consider asking to work from home so you don't have to pump as much and you can be available to help with naps and mealtimes. 

As a mom who works from home myself, it's such a wonderful feeling to be able to still participate in my daughters' days, even if just for 15 minutes or so at a time. I also have many friends with arrangements to work from home one or two days a week and they're grateful for the flexibility.