NCERTs are indispensible for laying a strong foundation for your preparation. They are written in very lucid manner and simple to understand.
You should take around 3 months to complete all the below mentioned NCERTs ( These Chapters and NCERTs are available for download at PrathamIAS.com )
Class 6 & 7
History our past
The Earth our Habitat
Social and political life 1 & 2
Our past-2
Our environment
Class 8
Resource and development
Our past 3 & 4
Social and political life
Economics
Class 9 and 10
Science
India and contemporary world
Contemporary india
Understanding economic development
India and contemporary world 2
Democratic politics
Class 11
Chemistry unit 14
Biology Unit 4 and 5
Fundamentals of physical geography
India Physical Environment
Understanding society
Indian constitution at work
Themes in world History
Indian economic development
Class 12
Chemistry unit 16
Biology units 8 , 9 and 10
Fundamentals of human geography
Living craft traditions unit 9 and 10
India – people and economy
Indian society
Themes in history 1 and 2
Contemporary world politics
Introduction to Indian art
Though the list seems long but many NCERTs are very thin . Hardly such textbooks take one day.
I would suggest you to either enroll for objective test series of PrathamIAS.com or any other test series from market. They have good sink of questions from NCERTs.
Note making from NCERTs can be optional. You can highlight in NCERTs itself and make small notes along the empty margins give alongside the page.
But I would reiterate that do not rush . Cover the books as per your own speed. Grasp what you are reading.