C.J.
Hello, i have four children and my children never had the bottle after a year. Except my youngest she is 14 months and still has the bottle for health reasons. I always mixed milk with formula half and half. Until they get use to it. As for the bottle they have a really cool sippy cups at walmart. They are called nubby. They have a soft top as a bottle nipple, and they still have to suck more like a sippy cup. And i would let her have it before bed. So you keep the tantrums to a minimum. And if it doesn't work from experience you may have to let her have her tantrums. I hope that help a little bit.