Pamparami Ng Gatas (breastmilk)

Good day po! I have 2 mos old baby. I take 2 natalac a day. Any tips and effective na pamparami ng gatas for breastfeed po. Normally kasi 1oz lng ung na papump ko inaabot pa ng isang oras mahigit. Nakakadede nmn si baby pero my times na parang bitin. Thank you po