Pumping at work question

LenMont

Hi-

I pumped for a year at work with my ds three years ago, but now that I'm going back to work tomorrow (new dd), I can't remember what I did!   I typically feed on one side only and then the other on the next feeding.  When I pump at work, should I pump only one side or should I pump both sides everytime? I don't want to screw this up because I only have to pump for three weeks and then I'll be back to EBF because it will be summer vacation (I'm a teacher).

Thanks!