Fear of bottle rot!!!

Ladies, please help me with ideas.

My one year old LOVES her bottle before bed, and will only fall asleep after a warm bottle, but fights me when I try to brush her teeth afterwards. It’s a fighting screaming war. Majority of the time I barely get the tooth brush to stay in her mouth longer than a few seconds.

Thankfully I am able to brush her teeth during the day, but she never lets me do it after a bottle.

Any recommendations? I am soooooo scared that she is going to get bottle rot