If baby has enough dirty and wet diapers and is gaining weight, your milk is enough for baby. Pumping is not an indicator of how much milk you have because babies are much more efficient in removing milk. Like my baby boy is 5 weeks and 3 days old, he is getting enough from me for sure coz he has plenty of wet and dirty diapers and gains weight nicely, but if I give him my milk in a bottle he eats 120-130 ml and if I pump to replace a feeding I get only 110-120 from both boobs combined, even though when he eats straight from the boob he eats only on 1 side for just 8-10 minutes and then he shuts his mouth and there's no way to open it again coz he just doesn't want to eat more, meaning that he is much more efficient than my pump! Also, if you put pumped milk in the fridge, you can see the components of your milk coz it separates after just a few hours, the bottom layer is foremilk (watery part), the middle one is hindmilk (white, that contains the nutrients), and the top one is fat, and your body produces exactly what your baby needs, meaning that having less fat in your milk than someone else is normal coz not all babies need the same amount, boys usually need more for example, so my milk has a lot of fat coz my boy needs it, but yours might contain less if your baby doesn't need that much! Also, eat enough and stay hydrated, get as much rest as possible, try to sleep when baby sleeps, and try not to stress, because all of these affect your milk supply!