1. Check the date range and coverage
Confirm how many nights were expected, how many synced and which were excluded. A trend based on 27 of 30 nights means three nights are unknown, not automatically typical or problem-free.
2. Identify the source of every value
Oura sleep stages and scores are Oura estimates. Phone-recorded sound and SomnoRoute event summaries come from a different route. Notes come from the user. They should remain labelled rather than blended into one unexplained result.
3. Compare like with like
Look across broadly comparable nights and note travel, illness, alcohol, medication changes, late routines, device fit or incomplete recording. A change may be worth describing without establishing its cause.
4. End with a factual summary
State what repeated, what changed, what was missing and how you felt. A concise factual summary is more useful for a professional conversation than turning an app score into a conclusion.