Forerunner 955 Solar battery drain V18.23

I have a battery issue with my Garmin 955 solar since 3 weeks. I bought my watch a bit more than 1 year ago, and battery was lasting about 10 days with my current parameter. For the last 3 weeks, battery capacity has dropped to 5 days. I have not touch any parameter. Maybe a new update caused this problem? Have you met similar issues? Any advices?