That's what I have to do too, black out the bedroom window and turn off everything that lights up the room, except the alarm clock. I turn that away from me so even it's feeble red display doesn't bother me.
Taras
-------------------- 10-inch F/4.5 Discovery Dob
6-inch F/8 Homebuilt Dob
4 1/4-inch F/4 Homebuilt reflector