Within the bounds of safety of course, we are wondering whether a sort of curtain/ mosquito net product might exist to put over our DS's cot- even with full black out cutains we can't get hs room dark enough to prevent him waking and staying awake after 45 minutes during the day. (He sleeps for longer in his pushchair, which we can make totally dark, however he is about to outgrow it.) Has anyone ever come across anything like this, and if not any other light- blocking tips...?!