Help Guys Serious

Hey guys i started my preparation of JEE in drop year (11,12) i was in boarding school so i didnt did jee prep , drop year was my first year to tackle jee type questions and i ended up with backlog and bad performance but if i take second drop i am preety sure I will perform well so guys is second drop ending up with NIT title worth or Shouldni select private college? Please guys give me guidance seniors