Y'know, unless you have a serious bingeing problem (eating 3000 calories is a lot), generally your body compensates for eating too much. When I'll eat say like 200-300 calories over, my body will naturally want less the next day. If you find yourself falling into bingeing problems I suggest you go see someone before it gets worse. "Starting tomorrow" always leads to "starting on monday" "starting on the first of the month" etc, just fucking do it, gain control of your life back.