Has anyone started the process of weaning off bottles/breast?

Michelle • Baby 💗 born 6/11/17 & 💗 born 8/27/19

My LO will be one on the 11th. She is dependent on her bottle to fall asleep. (I know, terrible habit!) I’m getting a little nervous approaching her 1st birthday. What are some tips on weaning from the bottle? She does use a sippy at meal time. She’s a pretty good eater with solids. She’s ok with her sippy. We use a cup with a straw. She usually makes a mess with it but she does show interest. Thanks!