Iron condors should be adjusted similar to short strangles. Yet with the risk defined feature of these strategies you can be even more conservative and slow with the adjustments. This is because statistically you should already have a high probability of success if you do nothing at all (and your risk is capped from the start - you can't lose more).
Of course, making an adjustment will only increase your probability of success over the course of the year and better use your capital when the trade goes against you. But it's not a requirement in the least.
In this video we'll look at different ways to make iron condor adjustments including rolling up the side of the trade that the market is moving away from, in an addition to adding more spreads overall.