Why Is My Breast Pump Losing Suction? February 21, 2021 By Lauren Carrane Is your breast pump not pumping as much milk as it used to? Here are 6 things you can try to troubleshoot the problem. (Click below to see infographic larger). Related Products: Best Ways to Warm Breast Milk How Can I Increase My Breastmilk Supply? How to Tell If Your Breasts Are Empty After Pumping