Raspberry Pi 4 DSI port display sleep on HAOS Console

Hi, I’ve installed HAOS on a Raspberry Pi 4 which has a screen connected to the DSI port. This screen is unfortunately now permanently on. Is there a way I can get the screen to sleep after a predefined amount of time? I’ve googled around and try things for other linux versions, but they don’t seem to apply here. Any assistance greatly appreciated. Many thanks.

did you find a solution?