Forerunner 255 Music battery drain

I have had my watch for about 14 months and I was really impressed with the battery life.  However, in the last two weeks I noticed that the battery is draining about 1 percent per hour.  I have tried unpairing and deleting the connect app and reinstalling after restarting my watch and phone but that did not do any good.  I also tried resetting my watch which did not do any good either.  Any suggestions