As per RBI guidelines the normal debt service coverage ratio is for 10 years. Below are the guidelines :
"The repayment period of the restructured advance including the moratorium, if any, does not exceed 15 years in the case of infrastructure advances and 10 years in the case of other advances. The aforesaid ceiling of 10 years would not be applicable for restructured home loans; in these cases the Board of Directors of the banks should prescribe the maximum period for restructured advance keeping in view the safety and soundness of the advances."
I would still like to know the reason for restructuring the loan as its gonna affect your credit score very badly and in future if you need any loan you will face a difficulty. You can speak to a credit counselor who can help you with an alternative or help you with a Debt Consolidation program. You can check the credit health repair agency website who helps you to overcome this issues and makes you to credit healthy too. You can visit https://www.creditsudhaar.com/