how to? BF baby to use bottles

I need some help please. Mishka is now 3 months old and has been BF exclusively, I have to use nipple shields.
I now want to wean Mishka onto bottles, to get her used to it for day feeds for when I go back to work.
I have the TT bottles. She has resisted the last 2 attempts. Any tips of how to do it please, using EBM

Thanks