I have a vivoactive 3 music. I run 3 times a week using the gps and music - the rest of the time I don’t wear it at all . I switch it off and store it in a box. Recently I have got my watch out for my run and it’s totally drained!!!! I put it away on around 70-80% and 2 days later - flat!!! This is just ridiculous- any ideas why this is happening?