Sleep tracking not working?

My Venu 3s has been terrible with the sleep tracking. I recently got it and it’s hit or miss if the sleep tracking will work. I recently started working night shift and now my watch won’t track my sleep at all. I’ve changed my sleep schedule in the app and will manually turn on sleep mode on my watch when I go to bed.

I read somewhere that if you must wear your watch continuously for at least two hours prior to sleep for it to work, is that true? I normally take my watch off to shower which I do right before sleep.

I reached out to support via the chat and the guy basically told me it’s because of my tattoos on my wrist and offered me no help.