Giving NIOS 12th after already passing from another board – how to fill form & fees?

Hey everyone,

I’ve already passed 12th from a regular board (CBSE/State), but I’m planning to give 12th again through NIOS with all 5 subjects to get a separate marksheet with better scores.

Also I can't fill more than 4 subjects after putting my last qualification as 12th.

I need help understanding the form filling process and fee structure:

Do I register as a fresh learner even if I’ve already passed from another board?

Will I still get a valid 12th certificate from NIOS that works for college/entrance exams?

What’s the fee for registering with 5 subjects? Any additional charges I should know about (like TOC or practicals)?

Can I choose completely new subjects or do they have to match my old board subjects?

If anyone here has done this or knows someone who has, I’d really appreciate your input.

Thanks