Right, I'll have one main chat open for high level planning and guidance. It can knock out big chunks for me. But as soon as I take it on a side quest to fix something that doesn't work, it often starts going off the rails. Better to open a separate context for that fix. And often there's a good reason that it created the issue, like it patterned itself into a wall and a dead-end. At that point you should either start back from where it started drifting or take over (but still starting at the pre-drift point.)