We are beginning to transition our 10wks old daughter to be bottle fed, preparing for my return to work but she wouldn't have it. She cries bloody murder everytime & sometimes gags at the bottle. We've tried Spectra, Avent classic, Avent natural, Pigeon, Mam.. also tried changing the teat sizes. At this point she doesn't even attempt to suck, just keeps crying. Anyone has had luck with bottle feeding after exclusively breastfeeding? Please share some tips!