Sudden supply drop

I don’t know what has happened today but I’m kind of concerned. On a typical pumping session I get about 6oz per breast at least four times during the day. Today though, I’m lucky to get 3oz per breast. My supply seems to have cut in half and I’m only 3 weeks postpartum. Granted my baby only eats about 3oz per feeding but at this rate I’m going to not have enough to supply her if this keeps up. Is there anything I can try to get my supply back up?

Nevermind. I’m back to normal today. Maybe just an off day or something.