Part of avoiding OTS is not neglecting the system.
I also think doing a reset every 3-4 years is extremely helpful. My reef has had two resets in the past 9 years. Pulled out all the dead undergrowth, and planted fist-sized mini colonies from the corals that were removed. I also focused upon the sandbed while the reset was happening because I had better access at that juncture.
A reset isn’t starting over. My aquascape hasn’t changed in nine years. I may have moved a rock or two, that’s it. Most of the lower level corals never move, and continue to grow larger.
Trimming is necessary, but I don’t do it nearly as often as others. Sometimes that’s a bad thing, for me and the reef. There are times I should have interceded sooner.