So I realized that my cham (whos cage is in my room) might have difficulty sleeping when I am up and about with the lights on at night. I've only had him for less than a week so I'm still learning lol. So I was gonna cover the cage with a black sheet at night but I was concerned that if his lights came on a few hours before I wake up if there is risk of fire due to the heat lamp getting hot right on the sheet. Any thoughts??