I plan to return to work in a few weeks. I've been told to give my LO a bottle around 6 weeks to get her used to a bottle. For this, I have used frozen EBM while her grandmothers were babysitting. I pumped around the same time I would have feed her. When I pump, do I pump the amount she drank during her feeding or do I pump until I am finished? I always seem to have more than she eats from a bottle. She doesn't seem to like to bottle feed and wants to have a long session once I return.