There are actually NO milk requirements for toddlers at this age. There are calcium requirements, but that does not mean that it has to come from milk.
From about 1-3 years old toddlers need 500mg of calcium per day. There is about 300mg of calcium in 250 mls of milk (about 8 ounces) -- so that works out to needing 12ish ounces of milk per day to meet calcium requirements, but any other calcium containing foods can be substituted.
Too much calcium interferes with iron absorption so it is something to keep an eye on.
Here are some other calcium sources:
Milk, whole or low-fat 1 cup 300 mg
Soy or Rice Milk 1 cup 300 mg
White beans 1/2 cup 113 mg
Instant Oatmeal 1 cup 100 mg
Broccoli, cooked 1/2 cup 35 mg
Broccoli, raw 1 cup 35 mg
Cheddar cheese 1.5 oz 300 mg
Yogurt, low-fat 8 oz 300 mg
Orange juice, calcium fortified 1 cup 350 mg
Orange, medium 1 40-50 mg
Sweet potatoes, mashed 1/2 cup 44 mg