For your reference, here are two methods to set up the Xiaomi Outdoor Camera CW300 to the sleep mode below:
1. Go to the [Mi Home/Xiaomi Home] APP >> select [Device card] >> enter the camera monitoring screen >> tap the [Sleep] button and the camera will immediately enter the sleep mode;
2. Go to the [Mi Home/Xiaomi Home] APP >> select [Device card] >> tap [...] at the upper right corner >> select [Camera settings] >> tap [Sleep settings] >> enable [Sleep mode].
Note:
You can select [Scheduled sleep time] to set up how often and when the camera automatically starts and ends the sleep mode.