So discouraged

So due to my son not getting enough milk they've suggested me pumping to more closely monitor his intake plus supplementing a high calorie formula. But my supply just keeps dwindling no matter what I do. I feel like I'm failing him. I know fed is best but I so want to breastfeed until he is weaned. I am exhausted from pumping all the time to try to increase my supply but I feel guilty for wanting to just give up. It's such a plethora of emotions. Just looking for some encouragement after that little pity party.