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: How to Return a Breast Pump That Is Not Working What to Do If You Have a Clogged Milk Duct Can I Drink Coffee or Alcohol While Breastfeeding?