Yes you can prepare for it. Just go through the Ncerts and make your concepts clear as well. pratice a lot. Do practice as much as you can. i have provided a link just go through that link.It may help you.

https://www.homeworkonweb.com/2018/09/25/iit/

thanks

Hello,
JEE Main is considered to be a tough exam due to the high competition level. Candidates should have strong hold of the basic concepts to clear the exam. JEE Main 2019 exam will be conducted in January and students just have two months to prepare for the exam.  I would suggest that you should first complete the topics which hold more weightage in the exam. The complete syllabus is important but since there is less time you should concentrate on important topics. Study them thoroughly and in depth. Try to understand the concept.

Don't worry. JEE Main 2019 exam will be conducted twice a year in January and April so you will still have the April exam and you can appear for the April attempt with good preparation.
Start your preparation dedicatedly. You must study with full concentration and sincerity. Make a proper schedule for the studies. Divide time equally for all the subjects.
After completion of any topic/unit you should solve questions related to that particular topic. Make sure to prepare the topics completely so that you are atleast confident about the topics which you have prepared.
Also, you can solve previous year question papers and give mock test.
With dedicated efforts and positive approach, you can score good marks in the exam.
All the Best!