Rahul Raj Singh was admitted to Shree Sai Hospital in suburban Kandivali on Sunday after he complained of chest pain and low blood pressure.
He was on Monday shifted to general ward of from intensive care unit, his lawyer Neeraj Gupta said.
"Though Rahul has been shifted to general ward, his condition is still not proper as he is in trauma," he said.
The police said that they will question Rahul after he is discharged.
As part of their investigation, police are currently talking to the common friends of the actress and Rahul.
The 24-year-old former "Balika Vadhu" star was found dead at her home in suburban Goregoan on April 1, in a suspected case of suicide.
Her friends Kamya Punjabi and Vikas Gupta had claimed that Rahul was cheating on Pratyusha and that they were in a "messy relationship".
They also alleged that Rahul used to slap her in public as well as in parties.
The police had recorded Rahul's statement at Bangur Nagar police station on Saturday.
The police had said that they were planning to reach out to friends (particularly males) of Pratyusha who in the past may have had tiff with the actress.
The probe so far had not found anything pointing to abetment of suicide by Rahul.