Help with EBF baby not taking a bottle

My baby is 4mos. I’m always with her I’ve only been away from her a handful of times since she’s been born for a couple hrs each time. My mom will be with her while I’m gone and each time she won’t drink from the bottle. I’ll pump milk for her but I’m struggling to have her drink from the bottle while I’m not around. My mom is saying I need to “train her to take a bottle” which I assume means give her a bottle more often instead of solely breastfeeding to get her used to it. Is there any tips or tricks to help with that? Specific bottle brands EBF babies seem more comfortable with? I would really appreciate any recommendations. Thank you.