Go to the Camera -> Photo option in DJI Go and select Timed Shot.. This option takes a continuous sequence of shots. You select the time between shots from 2 seconds to 60 seconds.
So, if you select 10 seconds and press the shutter button, the camera will take a shot, then wait ten seconds, then take another one and wait 10 more seconds. It will do this every 10 seconds until you press the shutter button again.
You can select a longer time... This will give you time to put down the controller.... You'll be holding the controller in the first shot, but you can just delete that one.