supplementary milk system

My baby failed to latch properly because my milk supply was very low. After visiting LC, I was introduced supplementary milk system to help my baby latch. Has any one tried this technique and did it work eventually?? Unfortunately at W2, my milk supply is still very low and almost no let down reflex with exclusively pumping. I am hoping that supplementary milk system can help to improve latching and milk supply so baby could suckle again. TIA