My LO is almost 10 weeks old and EBF. I return to work in a week and a half and in anticipation, I've started bottle training with expressed breast milk. She absolutely refuses and is hysterical when the nanny or DH offer it to her, regardless of whether I am in the room or out. We've tried 4 different bottles and nipples and no luck. I would usually break and offer the breast after 20 minutes of struggle or so but these last 4 days, the nanny and I buckled down and only offered bottle during what would be my work hours. She would sometimes take an ounce, maybe 2, with great struggle and only in a side-lying position (how I normally breastfeed her). She seemed to mostly be holding out until I offered the breast at 4 pm. Now, over the past 2 days she seems to have developed total oral aversion and screams hysterically at bottle, breast or pacifier. She wants nothing to touch her mouth and hates being put in any of her preferred feeding positions. I am only able to feed her now by offering breast while I stand and dance around the room while shushing frantically. I absolutely have to return to work, and am heartbroken at her refusal to eat. Does anyone have any ideas, advice, or tips? Or a clue of a specialist or someone I could see? My pediatrician just keeps saying "She will eat once she is hungry enough" but she has held out for period of 6 hours or more at a time. I don't want to see my baby failing to thrive or losing weight. Please help!