Hello student,

As per you have mentioned that you want to get in in medical line, then you have to give neet examination, and for that you should be prepared with both 11 and 12 syllabus.

However as a answer to your question if you want to do science from NIOS after 11 humanities, you have to start from 11th science you cannot skip the the oneplus and go to another without completing 11th final examination. So prepared well for yourself. Best of luck. You also can try our crash course for a better chance

https://medicine.careers360.com/articles/neet-crash-course-careers360