How hot is it getting? Do you have any alternative ventilation (are you cooling the lights/reflector)?
Use an intermittent schedule tomorrow. E.g. set your timer for the lights to go on for an hour every couple hours, or whatever can be tolerated. Note that I don't think this is good for the bulbs (someone correct me if I'm wrong), but what else can you do? Otherwise you need to make sure your room is totally light-tight and attempt to switch your lighting schedule to running them at night when it is cooler, e.g. on 9 pm to 9 am.