Yes absolutely ,as  there is not any individual cutoff  for mathematics part is specifically there for you can score more compared to  other subjects and get a better think but it is worthwhile to mention that JEE Main paper 2 mathematics is comparatively easy with paper and therefore if you are able to solve NCERT problems then don't bother that you won't be able to solve a single question because a student can solve NCERT problems I am sure that he will certainly solve some problems in JEE Main paper 2 also.