You worry too much about the price and heavily rely on the prediction of other people. Bitcoin haven't reached below $3k this year the lowest was $5800~ then went back to $6000 for months now. I strongly agree with what dothebeats said at the last part of his post. If Bitcoin reaches $3k out of nowhere there will be miners still mining the only ones that will be forced to stop are the ones with lesser hash power.

There's a chance that Bitcoin reaches $3k but I don't expect it to happen in the next couple of months or even next year because the price of Bitcoin keeps on improving as time goes by. Last year might be the last time we see Bitcoin at $3k.

It is possible if they can find other ways to reduce their electricity cost.