Randeep has mentioned in his interview that he got sick due to day/night shoots during the wedding track so may be he is taking a break. And they may continue to show his scenes here and there which they might have recorded earlier but if the CVs change the storyline that will be disastrous for the show. The show's popularity is mainly due to Randeep and if he is not in the lead no one else has the potential to keep its popularity up.
Dnt worry Randeep is only the lead.. he tuk his much deserved vacation to visit his family n im sure he shot his upcomin n went home.. separation track hain naa so he neednt shoot wit Naina together so im sure he shot his scenes, n the crew already has a bank of episodes so ..Neither the cvs wil replace him nor wil Randeep leave .. so jus njoy the episodes