nervous about feedings after her first birthday

I have so many unanswered questions such as how much milk intake do they have after there first birthday? How is everyone going on about weening ? My little girl is still drinking formula every three hours and I’m nervous about what she will be eating after her first birthday.she has become such a picky eater lately she picks over all her meat will only eat Mac and cheese and chicken nuggets 🤦🏽‍♀️ she won’t even eat bananas anymore and those were her favorite.and she stopped eating baby food months ago 😩 so I’m at a lost.what are you mamas planning?