Exclusively pumping

Saba

I hav been exclusively pumping from the second week...now baby is almost 7 weeks old... my milk supply is low so I gave formula also to my baby... now I am pumping 5 or 6 times in a 24 hour... and in each session I collect almost 4 ounce from both boobs... I was wondering should I pump more to produce more milk... I want to give more milk to my baby