Less suction with Pigeon gomini pump

Hi Mummies, I am experiencing issues with Pigeon gomini digital pump. In every session, I can only pump maximum 70 ml. After this when I hand express, I can easily get 50 ml more. But hand express is so tedious every time ? Can I check if so change pump to some other brand, I can get more milk out ? Any other mummies faced this ? #pleasehelp #firsttimemum