Even when mining will be no more profitable for me, i wouldnt shut it down. So maybe you make no profit for some weeks, but do you instant sell your coins to pay your bills? When im mining, im holding everything i mine and sell it when the price is high. So when mining is not profitable, i just continue to mine and hold the coins. But when its really to much minus, i can recommend you, to buy cryptocurrencies for the money you would pay for the electricity cost of your mining rig.