"Pcb to pcm/pcmb"

Maine 12th pcb se pass kia h this year so I am planning to chnge my stream from pcb to pcmb through nios agr mai fresh admission lu stream 1 me last qualification 10th daal kr to aage koi prblm hogi?bcz last qualification 12th daalne pe 4 subject hi de skte h most of the exams me 5 subject hona chaie ek marksheet pe

Or meri aapar I'd schl wale ne bnai thi so usse koi prblm hogi? agr uske through show hogya maine 12th already kr rkha h?

Can anyone guide me plz