oh I am the queen of pumping!!
i exclusively pump my milk and feed my baby with it in a bottle ever since she was born. I have learned everything about pumping! she is now 4.5months and i'm still doing it.
First of all here is a website that you should read..
http://kellymom.com/bf/pumpingmoms/pumping/pumping_decrease/In the first few weeks, your milk supply is not 100% fully in. I too was only pumping 1-2oz. I had to supplement with formula until my milk was fully in!
But DO NOT GIVE UP!!! Now I pump about 5-6oz every 4 hours, some women pump more and some less. everyone is different.
also the time of day influences how much you pump...more in the morning and less at night
I took supplements that are safe to increase supply...fenugreek and blessed thistle. 3xdaily
I also drank Milkmaid tea 2x daily.
Plenty of water and OATMEAL everyday!
If you pump every 2 hours for a few days, you will notice the supply increasing gradually! Make a chart of date, times, amounts that you pumped. I still chart mine after 4.5 months.
Do you have a good quality electric pump?
This is a very time consuming process and can get very frustrating...trust me!!! i cried and worried soooooo many times. but it depends on your willingness!
good luck!