After reading that karan wahi is shooting with alok nath, my predication is that story can be as follow
rohan and dr. mathur bump into each other somehow and just start talking. dr. mathur asks rohan, is something bothering him. rohan tells him ashni love story, without any names, etc.
rohan somehow convinces him to come home with him to just casually meet the family with whom he is staying.
thus, dr. mathur and col. verma come face to face. verma asks for his forgiveness and gets it.
Nidhi somehow tries to convince her nanaji to return to ashu, as he has just had a big setback and needs him the most at this time, without telling any details. Nanaji agrees.
ashu baba reunion
gradually nanaji puts 2 and 2 together (story told by rohan, nidhi's concern for ashu and ashu's pain) and realizes the matter.
Dr. mathur goes to verma to ask for nidhi's hand for ashu or rather to convince him
Wouldnt it be great if cvs proceed in this logical manner? though not much hope, khaas karke logic and ktlk cvs just dont go together. khair ab dekhe, tasteless khichdi khaane ko milti hai ya masaledaar aur mazedaar biryani