transitioning to whole milk

Jacqueline • Wife. Dog mom. Real mom. April '16 baby boy. Sept '17 baby girl.
How is everyone making the transition from formula to whole milk? I was thinking about doing half whole milk half formula. Kind of just like I did when I was transitioning from my breastmilk to formula. But I am looking for advice on what people have done in the past or have plans on doing with their little ones.