At 9 months you should have a nice little day sleep pattern developing by now. You may find they are objecting about being put down but try not to rush in. Give them the chance to resettle themselves first, as they may need five minutes to do so.
By 12 months the morning sleep may have shortened and the afternoon sleep has become longer. Your baby should be able to go through the night without a feed or waking up and will sleep for 10-11 hours.