Help regarding admission with Dual marksheets for BTech😭

So,i gave cbse boards 2024,then i took part admission in NIOS for chemistry improvement. Now i have 2 marksheets 1 CBSE + 1 NIOS improvement with only chemistry.I want to do btech but most btech clgs aren't accepting dual marksheets.....i have called srm, manipal, heritage they have all rejected it plus JOSAA and CUET does accept dual marksheet as well. To top it all of since i took part admission now i can't get a consolidated marksheet from nios with all 5 subjects because i can only get that through stream 1 public exam.I have even tried to change my stream from 4 to 1 meaning from part admission to full admission but nios is saying even that isn't allowed. So if there is anyone who's stuck in the same situation plz reply....or if anyone has gotten admission to any btech clgs with dual marksheet or have changed streams from 4 to 1 successfully or have any idea what to do in this scenario plzz reply.