The important thing is not to be too stressed about it. Also the more you pump / direct latch, the more milk is produced. In fact I have heard many mummies say that in the first month they found direct latching more effective in boosting breast milk supply than pumping.
i gave my baby formula from day 1, and slowly pumped regularly to get the supply up. it's still not a lot as of now at 6 months, but however much i have i will still feed him until i run out. just hang in there, don't give up on a bad day!
Don't give up Mummy! the more u latch the supply will increase. it takes a while and different from one mummy to another.