Here’s a 2 minute video with a great tip about how to keep leftover rice in your freezer: Kitchen Convivial Tips: Leftover Rice
You can keep leftover rice, i.e., sticky rice, as individually wrapped servings in the freezer.
Then thaw them in the microwave on their own, e.g., to use to make fried rice, or top them with your favorite accompaniment, and reheat them together.
Microwave perhaps 1 1/2 to 2 minutes on high.
Kitchen Convivial 