EBF wont take a bottle -any tips.

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My DD is 12 weeks and EBF she has taken a bottle twice before but only took a couple of ounces before screaming the house down till I BF her.
She's a very happy baby, never cries and has been sleeping through since 1 week old but Im supposed to be going out for the 1st time in a year tomorrow night and the MIL is babysitting so wont go if she wont feed any tips I keep hearing people say beaker feed. Is this a special type of beaker ??
Sorry its a bit long but this is baby no 4 and none of the others had a problem taking a bottle. Im using tommee t cloer to nature bottle and it's Breast milk..

Thanks

She is more likely to take a bottle from someone other than you ... or that's the theory. DS2 refused bottles too, he preferred to go hungry for several hours rather than take a bottle, I don't think occasional long gaps between feeds is a problem.