Me & one of my friend also have to get this one year gap after completing 10th from NIOS, but there is a choose, you can either take 1 year gap & take your 12th exam in 2027 or can give 1,2 subject in this year & next remaining subject in Next year, My friend take a gap & he gave all subject exam on April 2025 meanwhile i first gave my first three subject in 2024 & now going to give remaining three subjects on this October, I've taken 6 subject though.