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.
That's right, agree with this. Of course if your farm is fully automative and do not requires some time for tuning and support. Otherwise it's better to shut it down right now than still get such profits and waste such time.