help! bottlegate 2017

I went back to work two days a week since my baby was 6 weeks, and she was ok, taking my expressed milk in a bottle. Suddenly she's refusing to eat from anything other than my breast. I'm at my wits end even attempting to use a syringe!!!  Does anybody have any advice? I'm thinking of moving her onto Solids early (4 months) just so I know that she's not hungry and if she's upset it's a comfort thing? I feel so awful leaving her but I can't afford to leave my work 😓 anybody got any advice? Have tried a few different teats but she even rejects a pacifier since she was born. I think she's not a fan of plastic ... HELP!!! 😳😳😳😳