You don’t have to wean them onto cows milk you can just switch x
I give him whole milk during the day and then his night bottle is formula
I started offering a couple oz a day once she turned 11 mo and then when she turned 1 I added less formula over a week and she is now fully on cows milk
Also wondering! If I remember correctly with my first, we transitioned over a couple weeks to fully whole milk and off of formula. I think we incorporated a small bottle of whole milk a day until we decided to stop formula.