I have a Medela PISA, just starting this week I have been having trouble with it. Normally I pump a minimum of about 6.5 to 7 oz and upwards of 9 oz with my first pump of the day then about 3 - 4.5 oz each pump afterwards. Right now it's about 5 oz first pump, then 2.5 to 3.5 for the next pumps.
I am wondering if my pump is losing suction? I can still get streams of milk and express a fair bit after I've been pumping a good 20-25 minutes. Right now I'm having to pump twice in the evening to get enough milk for my sons bottles for the next day.
Anyone else experience similar problems? How did you resolve them? I called Medela and they just said to replace the membranes (doing that tonight as hubby has a BRU near his work) and failing that they'll need to troubleshoot the pump with me.
Anything I can do in the meantime to keep my supply up/get more milk while I pump? My son is almost 10 months and I need 15 oz to fill his bottles for childcare, if that helps any.