Help!! Breastfeeding

I’m 3 months into breastfeeding & baby will ONLY drink from breast. I’m always with her so it’s never been a problem but i have an event coming up at the end of October that I can’t take her too and she won’t drink from a bottle so idk what to do. I’ve tried almost every brand of bottle you can think of and she just gags at all of them. Does anyone know of a trick I could try ti get her to take a bottle of my pumped milk? Or a brand that worked for you? I’m desperate! Thanks!