Help! How to get baby to accept bottle?!

Kelly • Mama to 1 toddler girl (and baby boy due in August!)

My baby has been EBF so far, and at almost 12 weeks I am about to go back to work. We started doing “trial runs” of pumper milk with our childcare provider last week and at first baby did great... but now she is rejecting the bottle and not eating very much at all (certainly much less frequently than she breast feeds). We ruled out any health concern (no temperature with either rectal or forehead therm, and she has plenty of wet/dirty diapers). I go back to work Friday and NEED to get her taking the bottle before then! What has worked for you?!?!