This Ishaan running away & only Ram being the one to save him is a very contrived plot.
Which means it is there only for the purpose of establishing a bond between Ram & Ishaan - that is significant. But how?
Wait and watch .. Ram who doesn't know about geyser will talk Physics, Chemistry (not love waala), Biology (not ahem wala) to Ishaan. He already impressed Priya with his Mathematics skills
He is bad at geography (hence was learning abt planets)
Priya madam ke aane ke baad, bandha has become academically good but he is not able to teach her love waala lessons
Ram is a good student, Priya is a good teacher
Priya is a bad student, Ram is a bad teacher