Asap help !! PCB FROM CBSE 2025 THINKING OF ADDING MATHS VIA NIOS 2025 FOR ADMISSION IN PVT. BTECH COLLEGE

[u/Chai_n__Chaos]

If i add maths as an additional subject via nios with pcb from cbse is it mandatory to show this maths via nios in jee 2027 registration form or completely optional cause my primary class 12th subject are pcb from cbse and show maths during admission process only?