Hello,

There is no shortcut to success. You can't consider any chapter that it is not important. The board officials who prepare the paper can ask question from any part of syllabus. Previous year trends may not be followed these year but the important topic and weightage statistics are given as per the exam conducted from years.

Try to read topics you find easy. Ask your doubts to any reliable person whom you feel that this person can help you or ask to your teacher directly.  Practice as much as you can.

Here is the link to important topics:-

https://medicine.careers360.com/articles/neet-chapter-wise-weightage-and-important-topics

Hope it helps!