Before the concert, the band does a sound check in an empty room. Your quiet mornings are the same thing.

Preparation in an empty room is not a lesser version of the performance. It is where the levels get set, where problems surface while they are still cheap to fix, and where the thing becomes possible at all. The quiet hour is doing structural work even though nothing visible is produced by it.

Protect one stretch of your day the way a band protects a sound check. Early is easiest because nothing has started competing for it yet. Use it to set the levels rather than to get ahead, and judge it by how the rest of the day runs.