transitioning from formula to milk

My daughter just turned one and shes starting to drink whole milk, shes fine with it, its just that i dont know how much i should be giving her a day i think weve been giving her too much?? 

My kids pediatrician says 18-21 ounces per day.  
Remember, it's just a drink.  Not a formula replacement. She also needs good meals

I've read it's 16-20 oz per day that's recommended

16-20 oz
My youngest gets it at meals right now
My oldest would drink a gallon a day if I let her lol

My daughter LOVES milk.. I fill her 10oz cup and she drains it,brings it to me to refill..

She gets 2-4 of these a day sometimes..

I try to make sure she gets water in between meals in her cup.. Then the occasional bit of juice.

We get WIC so we get 4 1/2 gallons a milk.. So milk goes to waste even if she drinks 4 sippy cup fulls a day.

I will be glad when she goes to 2% milk so my husband can help her drink it.

Between my daughter and husband..I need a milk cow !! They could drink gallons of milk a day if allowed