Apple Watch to track UARS?

I’m thinking about buying an Apple Watch to help me track my sleep.

I saw that Apple records “breathing disturbances” through the watch and I’m curious if anyone has found it helpful,

Basically my non-REM AHI is a 4.1 but my REM AHI is an 11.

My theory is that my tongue collapses and causes the increased REM AHI, and I wanted to see wether I could maybe like time when it happens to see wether it correlates to when my sleep reaches REM.

(Ex. At 3am I enter REM, and my breathing disturbances start at around the same time)

Basically I’m hoping the watch will be able to tell me what time I experience breathing disturbances.