Theory 1- Mujhe yeh Rishta todna padega- Is he talking about Adi 😉 🤣 he might choose Ishita over Adi. Highly impossible but can be speculated.
Theory 2- there is an actual seperation where he genuinely feels like Ishita should have a better chance at love. This too is possible. But I dont think she will b carrying his childn story will take a leap coz if it does it will KILL the show for good. They will just show a mini misunderstanding or physical seperation of sorts and then a dramatized Confession in the end (which I have already seen in Jodha Akbar 😆)
Shani being negative- Yes his dialogues even when he says in good faith looks negative, but I guess currently the makers r not sure f what to do about him 😛 He might turn negative once Param is out, now if he turns negative there will b too many villains n Makers wont b able to justify each character in negative way properly as it is they r struggling with Shani character 🤣