I am breastfeeding but not producing so much.. help!?

Natasha
I was wondering if there are any suggestions to increase my breast milk because I cannot even pump a whole bottle yet and my baby girl is a month now. In the beginning she was loosing weight and doctor suggested I supplement her on top of breastfeeding. I honestly feel like I am failing because I cannot produce enough milk for her and the fact she lost weight due to not enough milk. I just want what's best for my baby girl and I want to breastfeed exclusively without the formula but seems like I have to continue to do both... I just feel so down that my milk production is so slow compared to some mothers. 😞😞