Charge 3 sleep information inaccurate

[Josephgal]

My Fitbit does not seem to be tracking my sleep, especially deep sleep, correctly. Here's a few recent nights' sleep record. They make absolutely no sense. 

Sleep becomes more shallow with shorter, more frequent REM sleep later in the night. REM basically follows deep sleep. As you can see these graphs have more frequent cycles early in the night, with sleep becoming deeper over time and REM occurring spontaneously.  This is the opposite of what actually happens when we sleep. 

I have had a sleep study done not too long ago and have no sleep disorders that would disrupt my sleep cycles, but even if I did the graphs clearly have no basis in reality. 

Is this an issue with how I'm wearing the device, or just a limitation of the sleep tracking?  I have tried wearing the device tighter or looser with the same results. 

Ifi it's the latter, is there a way to remove the sleep cycle from my sleep score calculation in the app?  I don't want to be seeing this information if it's not accurate. 

Moderator Edit: Clarified subject

[AlejandraFitbit]

It's great to see you around, @Josephgal.

Thanks for troubleshooting this sleep issue and for the attachments. If you are having problems with your sleep information, try the following:

1. Make sure to not take off your tracker during the night.
2. Do you remember being awake during the night? If yes, that solves it! Keep in mind that your tracker will detect if you are awake and will stop the sleep tracking process. If no, proceed to step three.
3. Restart the tracker. See instructions in the help article: How do I restart my Fitbit device?.
4. Confirm that the tracker is snug on your wrist (with an HR tracker, the lights shouldn't be visible).
5. Try sleeping with the tracker on your non-dominant hand.
6. If the setting was set to sensitive, please switch it to normal. 
7. If steps 1-6 do not solve the issue, I suggest manually editing the sleep log to reflect the time slept. See instructions in the article: How do I edit my sleep history in the Fitbit app?.​

Let me know the outcome.