Wanting baby to take bottle

Hi,
My DD2 is 4 months old, i'am preparing to go back to work in Sept so trying to get her to take the bottle of EBM then eventually put her on formula. Today was day one and she would not have a bar of it. I got my DH to try aswell when he got home from work but she also refused. Im stressing out now thinking what if the time comes when i go to work and she's still refusing? I know its only been 1 day but i just don't see her waking up one day and going.."ok i will take the bottle today", you know what i mean? Anyone have tips or stories to help me through?

I'm thinking of the same issue in February i have to start studying again and my second will be 4 months. I think it depends on what kind of bottle you are using and the type of teat it has with it. You can get bottles with teats to mimic the shape of a nipple and such and i think they are tommy tippee? But it might just be she doesn't like the fact it doesn't smell like you and all that. For my daughter when i had to start her on formula i used tommy tippee closer to nature bottles.