i have a girl just over 3 months and have go ba...

i have a girl just over 3 months and have go back to work in 2 weeks i have been trying to get her to take a bottle for the last 2 months. she gets so upset and screams so loud she chokes. i need to go to work for the money and i feel if i leave her she will stave.. iv got 5 different bottles with no luck different people have tried. im not sure what else i have to do the child care people just say she will get it but im really stressed out and losing my hair and sleep over it. does anyone have any ideas? or can someone tell me that it will be ok and she will get it and wont stave herself if i leave.