I have same issue too. Worse is my baby totally reject breast because the volume is very low compared to bottle. I visited LC and they suggest to me with supplementary feeding system. It's hard work cause u have to latch with fake milk + express milk too. I'm doing latching twice a day around 30min each. I'm not sure if it could eventually make my milk increase but LC say monitor 2 weeks first. Also consider your pump! I was using S9+ spectra but switch to S1+ and my pump volume is slightly better from 20ml to 40ml. Keep trying!!
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