in my opinion raghu should give the priorities to sumitra instead of shivani and break the fast sumitra firstly.he married shivani in forcibly due to circumstances and she is only his responsibility not is a part of his family life, because both have no value of this marriage.he should take care of sumitra also along with his work & shivani responsibility.because he promised sumitra a lot of time at own wish.he should file a divorce case.
This advice is applicable only if he has any intense to marry sumitra. otherwise go to hell.