Welcome to the forum and congratulations on the new baby!
The rule of thumb for expressed milk is that you need around 1.5 oz per hour of separation. Maybe a little less when the baby isn't that hungry, maybe a little more when he's in a growth spurt. So if you were gone for an hour or two, a 2-3 oz bottle should be sufficient. I know it's hard to believe that is enough, when you see formula-fed babies sucking down massive bottles! But formula-fed infants tend to eat larger amounts, less often than their breastfed peers. This is probably due to the mechanics of bottlefeeding, as it is so easy to overfeed a baby with a bottle and impossible to do it with the breast.
Getting 1-2 oz when you pump is normal, particularly if you are pumping after nursing, rather than instead of nursing. Some questions for you:
- How long do you have until you return to work?
- What sort of pump are you using and how often are you using it?
- How long will you be separated from your baby during the workday?
- How often will you be able to pump when you're at work?
The answers to these questions can help us figure out if you're on track to have the milk you need, or if you're going to need to adjust your pumping situation.
Coolest thing my big girl said recently: "How can you tell the world is moving when you are standing on it?"
Coolest thing my little girl sang recently: "I love dat one-two pupples!"