I am also of the opinion that it's not just Diljeet, but the whole leap that brought the dip in TRP.
- The leap was too early.
- They didn't even try to establish Sahan as a couple who loved each other.
- They kept bringing seperation tracks one after the other.
- Angad became more toxic. Sahiba became a bigger doormat.
- Many tracks with major plot twists weren't given an ending.
- Diljeet was neither written nor performed in a convincinv manner.
II also think people were waiting for Angad and Sahiba to reunite. Their patience got tested too often.