Pico Explorer turn off display

Is there a way to turn off the display? I’m trying to save battery power.
If not via code is there a safe way to disconnect and reconnect power?
I’ve tried unplugging the connector but the Pico needs a reboot to re establish the connection.

Unfortunately, it appears from the pinout, that the backlight control isn’t available.
display.set_pen(0, 0, 0)
Will set it all black, all LED’s off, except for the backlight.