I started pumping the day I gave birth, it was every 2 hours on the dot for 2 weeks. Then I brought baby home and kept pumping and bottle feeding her. I'm on week 4 now and For the last week I have been breast feeding every 3ish hours and also pumping about every 4-5 hours but my supply has diminished greatly. I used to get anywhere from 2-4 oz each time I pumped and now I'm lucky if I get 1.5oz. What is going on? Baby doesn't seem to get enough from the breast so I also give her a small bottle after.  I'm getting upset because I have to go back to work soon and I'm scared I won't have enough saved up for her to eat.