Big boy

So this week my little Reg will turn 1! It is so sad to think he is growing up. I feel like just yesterday I was huge and waiting to meet my little guy. With this birthday comes a lot of changes. NO MORE FORMULA. I don't know how Reg will like this but it's so expensive. This leads me into my first question.

1 How do you switch a kid over to cows milk?

I have no idea how to do this and we don't go to the doc for two more weeks.