Can’t do 40 hours

I usually do OMAD but I’m stuck at a plateau so one day I decided to do 40 hours and man was it hard. I can’t do it anymore I always give up and end up eating more than usual, what can I do? Mind while there was a meal waiting for me in the fridge and that’s all I could think about, maybe if I didn’t have anything in my fridge it would be easier. Just hard when the hunger pains come on and you’re bored.