What happened to rutu?

Ruturaj was so consistent in the domestic circuit having list a avg of 60+ which is the most for any batter in 50+ inn and fc stats of around 48 which are also not bad but now his stats are down to 56 and 41 which is quite a degrade ? What happened suddenly he failed in major tournaments like smat,vht while in the last few seasons of the these tournaments he was the leading run scorer in them ? Also this can affect his ict career as the number 3 spot might be empty soon and he will get very less opportunities to grab it