Inquiry Regarding NIOS Admission for Stream Change After Passing CBSE Class 12

I am currently a Class 12 PCB student under the CBSE board and have also taken admission in the NIOS October session as a fresh candidate, enrolling in five subjects based on my Class 10 marksheet. I am confident that I will successfully complete my CBSE Class 12 examinations with a score of 85% or higher.

The reason for my NIOS enrollment is that I wish to change my stream from PCB to PCM. I would like to clarify whether pursuing Class 12 under NIOS after already passing from CBSE would lead to any issues in the future. Additionally, I would appreciate any insights on whether there have been similar cases before and how they were handled.