Bottles/sippy cups

Hello. My daughter just turned 6months the other day and we’ve been having trouble getting her to take bottles. She’s never taken one for me but she does for my in-laws, which is great cause my MIL watches her two days a week. Well over the last few weeks she’s been refusing bottles. I’ve tried several different kinds and she just won’t take them at all anymore. Should I try to transition her to sippy cups? And if so does anyone have any advice on how to do that? Thank you.