"He is doing well. He is much better now. He shall be discharged in a day or two," Dimple told.
The 69-year-old was admitted to the Lilavati Hospital here Saturday.
He has not been keeping well for quite some time. On April 20, his manager Ashwin told that the actor had stopped taking food for "three or four days".
But the next day, Rajesh Khanna stepped out of his Bandra bungalow, Aashirvad, to wave at fans. Dimple and son-in-law Akshay Kumar were at his side and said that he was "fine".
In April, the actor was admitted to hospital after he felt uneasy and weak. He was discharged after about three days.
Dimple told that "he is exhausted and a little weak" and that he doesn't have any liver infection.
Rajesh Khanna recently featured in Havell's fan new ad campaign called - Havells Fans Forever.
Fondly called 'Kaka' by his fans, his golden era started with the 1969 blockbuster "Aaradhana" and it was followed by hits like "Do Raaste", "Safar", "Kati Patang" and "Anand".
In 1973, he married Dimple and has two daughters with her - Twinkle and Rinkie. The two separated in 1984 and thereafter lived separately.
Their elder daughter Twinkle is married to Akshay Kumar and Rinki is married to London-based investment banker Samir Saran.
Anju Mahendru, Reena Roy visit ailing Rajesh Khanna at the hospital
The yesteryear superstar's ill health is currently the talk of the town and all his well-wishers are making it a point to visit him
The latest one being his ex-girl friend Anju Mahendru and former co-star Reena Roy who saw him over the weekend.