Steeping leaves multiple times
Loose-leaf oolong tea can be re-steeped multiple times. However we recommend doing all of your steeping in one session rather than waiting until the later. Just brew all your tea in one session and save some to drink later. Throw it in the fridge for a nice iced tea.
If you only steep the leaves once or twice and don't want to waste the leaves, try cold brewing. Just take the left- over leaves, throw them in a pitcher of water, and throw that in the fridge. The next day you'll have a refreshing, light, cold brewed tea.