For sure, with the latest models, treating the model like a respected professional that needs context and input is essential. usually I get the best results when the context window is right around 70% full
I used to be trigger happy with /compact or using the hand off technique to transfer knowledge between sessions with a doc. But lately the newer generation of models seem to be handling long context pretty well up to around 20% remaining context.
But this is when I'm working on the same focused task. I would instantly reset it if I started implementing an unrelated task. Even if there was 90% left, since theres just no benefit to keeping the old context