Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Do not delay emergency care in order to make a recording.
Seek urgent or emergency care for:
Training can improve confidence and help people respond appropriately if a future emergency occurs.
The timing of routine follow-up depends on the baby's age and clinical assessment, but prompt contact with the baby's primary care clinician is often appropriate.
Contact the baby's clinician promptly if there are repeated brief episodes, new feeding difficulty, coughing or choking with feeds, poor intake, unusual sleepiness, or a change from the baby's normal behavior.
Before leaving medical care, caregivers should understand why the event was or was not classified as a BRUE, whether the baby meets lower-risk criteria, and what follow-up is planned.
At follow-up, the clinician may review feeding, growth, breathing, sleep, development, and whether another event has occurred.
Bring a written description of any new episode.
If it is safe to do so, noting the start and stop time can be useful.
The article also says
Caregivers and other regular childcare providers may benefit from an approved infant CPR course.
Every sign above is quoted from the sofidex article on Brief resolved unexplained event - BRUE. If you are not sure, err upward — it is always reasonable to be checked.