Battery charged to 100 says only 4 days on V4s have not seen 7 days since I got it just after Christmas.

Battery charged to 100 says only 4 days on V4s have not seen 7 days since I got it just after Christmas.  Not sure what to try using digital face option that is available without second hand.  No WIFI, no PulseOX, and still not lasting.  Do yoga 35 mins every day and 10 mins of strength training 5 days a week.  Saturday and Sunday or long walks for total of about 14 miles.  Have to charge at least on Monday and again on  either Thursday or Friday to cover it all, I do sleep with my Garmin on at night. 

Love the way it fits and looks, but very unhappy with the extremely poor battery life.  This is my 4th Garmin, to own.  Please advice what to do added the Widget "Battery Widget" so I could see What it was doing... 

Thank you Julie