It will depend mainly on the bitcoin price in USD. As long as it doesn't increase significantly, I'd expect small difficulty jumps, like the last months.
I have bought some TH1 to lend them, so I can find out how it works in practice.
I believe there is no reason for ASIC owners to turn their miners off. At least when BTC price is higher than spended electricity. And "higher" doesn't mean "more than $500", it's more like "more than $50".

So I will not going long with price higher than 0.9 BTC.
And don't forget to monitor this:
https://bitcoinwisdom.com/bitcoin/difficulty