Weaning off of formula help

Nya • Baby girl 💖💖 2/6/2020

My baby is about to be one February 6 and I just used up her last can of formula and don’t wanna by another one. (She’s also breastfeed too but I can’t make 8oz bottles anymore only 4 or 5oz 😢) but I’m Thinking about trying regular milk over the weekend before her birthday and just wanted to know when is everyone going to change from formula to regular milk and what’s some good tips to help with the change?