Adviced needed FTM

My son just turned 4 months today, I breastfeed him unless I have an appointment to go to then my husband tries to give him the bottle (pumped milk). The problem is that my son hates eating from the bottle. I have to get home as quick as possible to give him milk directly from my breast or else he will scream his head off and wont feel satisfied. My question is, what should I do when I try to start work again? I'm not in a rush to work (love spending all my time with him) but I do want my own money to help with bills.