2026 MY Juniper giving 200 miles on full charge

This is MY's first winter in north east and the range has reduced considerably. I just use for 20 miles in a day and battery is reduced by 10% every day consistently during winters. Which means a range of 200 for full charge. And this is all city driving with no use of brakes (I use only in emergencies) hence making full use of regenerative braking and always drive on chill mode. Is this normal or shall I get it checked?