Too early to say whether Kohli is back in form or not. Right now what matters is that RCB is at the 4th position, with 12 points from 11 matches. But we need to remember that the 5th and 6th placed teams have played lesser number of matches when compared to RCB. SRH has 10 points from 9 matches and Punjab has 10 from 10. So there is no guarantee that RCB will manage to qualify for the next stage. And as far as Kohli is concerned, his overall stats are not yet satisfactory. Till now he has scored 216 runs at an average of 21.60, and strike rate of 111.91.
If BCCI is comfortable with Kohli current stats and have his spot reserved in national squad and same is done by RCB management then why King kohli need to worry. The way things are going I am sure kohli will continue this form till his retirement from national and ipl squad.