Hey there

Organic chemistry is considered most interesting part of the whole syllabus if you are preparing for boards then you can easily Finish it within a month or two. But you'll need a mentor in your case I'll suggest you to watch videos of you tube there are many lectures on you tube. Then read organic chemistry from NCERT are just try to remember each and every point if possible mark every important point note it somewhere then you will find that if you continuously revise then you will definitely complete the part within a month or two.

Good luck