Hi,

200 days can be enough to cover the class 11 syllabus.

-Initially you should have clarity regarding syllabus.

-Make a timetable and devote 3-4 hrs everyday for it.

-Divide the syllabus in such a way that you can finish the theory by 5 months.

-Collect the required materials and revise NCERT properly.

-Proper short notes have to be made and doubts needs to be clarified.

-Parallelly solve problems in a time bound manner.

-Also give mock test on a weekly basis.

Have a strong understanding in the theory part which in turn will help you in problem solving.Divide the months accordingly.

Use the link for further reference

https://school.careers360.com/articles/cbse-syllabus-for-class-11

All the best!!