Bottle trouble 😩

Anyone have a baby like mee??? This is my second daughter. She was very picky after the first 3 weeks she wouldnt take any bottles like the advent bottles. I finally got her to take the tiny nippled dr brown bottles. When shes ready to drink she fusses and fusses and pushes the nipple out even tho she wants to eat. Im the only one that can really get her to eat. Its so stressful im always worried if my mom is goinng to watch her she wont be able go get her to eat. My mom will try when Im around and has a VERY hard time getting her to eat. What can I do to help her drink easier and take the bottle. Some times shell push and push and push it out and then gag on it but want it. So we have to keep trying over and over until she latches.