Apple Watch Series 11 sleep tracking inconsistently records sleep

I have an apple watch series 11. It is always updated as necessary. I wear it to sleep every night and have it tight on my wrist in the same way every night. I have my bedtime scheduled for 9:45 and my wake time scheduled for 6:45. I typically have lights out by 10:00. Sometimes it doesn't begin recording my sleep until midnight or 1AM even though I have been asleep during that time and have even experienced wakefulness. The problem is random-it happens some night and not others so there is nothing different that I am doing that results in this. Its also weird that there is no actual change in my watch tightness or location when it starts recording my sleeptime. Any thoughts about how I can achieve consistency?

Posted on Sep 17, 2026 10:10 AM

1 reply

WheelieNick

Level 9 (74,110 points)

Sep 18, 2026 12:43 AM in response to E2squated

Disable "Track Time in Bed with iPhone"

If this feature is turned on, your iPhone uses your nightstand activity (like picking up the phone to check the time or a notification) to help dictate when your sleep session starts. If the phone registers any background movement or usage, it can override the watch's sensors and delay the sleep start time.

How to fix it: On your iPhone, open the Health app → tap Browse → Sleep → scroll down to Full Schedule & Options → turn off Track Time in Bed with iPhone.