It never ceases to amaze me that people on the forums think that they know better than
Apple battery engineers who make careers out of batteries, including battery life.
@eyoungren is giving sage advice as usual, plug it in and let the Apple engineers take care of it. When the battery dies, replace it with a genuine Apple battery - it’s not that expensive.
That said, I have a Watch that‘s almost 2 years old and shows no sign of losing battery life - I turned off AOD and enabled ‘raise to wake’, and that’s all I’ve done. Kind of amazing since the battery is the size of a postage stamp.