The guidelines differ between countries. In the UK a minimum of 350mls (approx 12oz) is recommended from 1 year with anything between 12-20oz (350-600mls) being considered ok. These intakes also include milk with cereal and in foods and also any other dairy products your lo eats.
At 1 year both my lo's were down to 2 milk feeds per day. DS had both of his from a lidded cup by 11 months and dd had hers from a cup by about 15 months.