Re: dminishing milk supply; new mom with 2week old infant
Welcome and congratulations on the new baby!
What you describe sounds pretty normal. When you feel swollen and full, you're generally making too much milk. 3-4 oz with every pump is actually a lot of milk. 2-3 oz/pump is quite normal. Not experiencing letdown is totally normal. Many moms never experience letdown (I never felt it with my first, and felt it only in the beginning with my second, when I had significant oversupply).
So, what should you do? Here's what I suggest:
1. Ditch the shield if possible- it can inhibit milk transfer and lead to decreased supply.
2. Instead of supplementing via bottle, either use the special-needs feeder (You'll reduce the likelihood of bottle preference) or just stop supplementing (Just put the baby back on the breast when she wakes 20 minutes after nursing and watch diaper output. If diaper output continues to be normal, then so is milk intake.)
Hang in there! You can do this, you are doing it. Breastfeeding is like a dance where neither partner knows the steps. At first it's clumsy and difficult, but if you persevere you'll master it!
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!"