Fenix 7 battery drain after update

Hi! I experienced high battery drain after update of firmware. It happened both when I updated to 18.3x and 19.3x. Battery went from 100% to 0 in 4-5 days. Normally I got like 25 days. Now I downgraded to 16.3x and everything is Okey. Do you guys also experience that? Do you know the fix? Thank you!