breastfeeding 😔

Pauleth
I love breastfeeding & pumping milk for my daughter since i go to work. But i stay pumping for 15-20 minitues and only pump 2-4 oz(but mostly 2) and i get so frusterated !! I just want to stop but i know i have to have some milk for her when i work. I been pumping for two months almost 3 & i still dont get alot out when i pump. 😔😔 it makes me sad/mad. Im trying the mothers milk but im not sure if it is helping, i drink plenty of water and eat my right meals. Any suggestions or comments ?? Please i dont want to stop pumping since i get discouraged ..Â