Milk query

Not really sure where I should be posting this but...
My 5.5month old is currently ebf, I'd like to start giving her a bottle mainly so she gets used to it but also to cut down a little so my mum can have her every now and again so my oh and I can spend some time together, my question is, I know she's not supposed to have cows milk until she is a year but could she have goats milk sooner? I do not want to give her formula