• preparation could be home based in the form of referring to standard textbooks and making your own notes along with giving regular MCQ mock examinations as well as institution based wherein you attend the classes of institutions like Aakash or Allen regularly and gain indepth knowledge, as a teacher takes you forward with the different chapters along with the subject based regular tests organised by them, which will help you with your regular performance analysis
• For physics you could Ideally follow a book like Arihant or SL Arora since it will give you a diverse concept in important chapters of mechanics, electromagnetism, thermodynamics and modern physics which will not only help you with your circuit diagrams associated problems containing resistance, inductance and capacitance circuits but will also help you with your complex algebric numericals based on current electricity and mechanics associated problems.
• physics is a science of numericals mainly and the formulae are  to be remembered and applied, so I would recommend you make a copy containing most of the important formulae and their prototype uses in different numericals and practice them regularly to enhance your chances of doing the numericals in a fool proof manner in your examination
• chemistry in medical terminology is more of an organic chemistry based subject so you need to have indepth knowledge in the chapters of carbonyl compounds and reaction mechanism which can be obtained from books like OP Agarwal and OP tandon
• These books in addition also give you good knowledge about the physical chemistry chapters of moles and equivalent, atomic structure, chemical kinetics and chemical energetics which are also chapters famous for being questioned upon in NEET
• for metallurgy and inorganic chemistry p block elements and heavy metals always play an important role and are chapters which cannot be missed for neet
• In biology it is all about studying things in a sequential tabular manner and going through the facts regularly since regular revision is the only key to scoring maximum marks in biology
• The chapters of biomolecules, animal physiology microbiology, biotechnology and genetics are most important since they are being questioned upon heavily in the recent years and you need to study them in a systematic organised manner using tables, flow charts and diagrams and not blindly by heartening the textual materials
• to talk of a study plan depending upon your capability try to dedicate 6 to 8 hours of study time everyday where you can start the day with biology in a fresh mind and spend 3 to 4 hours in the morning on it before lunch following which you can take a small break of about an hour to relax yourself and start off with a couple of hours of physics thereafter and after practicing the numericals give yourself another short break of about an hour or two and end your day with around 3 hours of chemistry
• Keep yourself healthy by eating and sleeping well and keep yourself mentally stress free since tension hinders performance levels and renders you are unable to answer stuff which you should be able to deliver easily in the examination hall
• Never forget that practice makes you perfect so keep giving as many mock examinations as possible in the MCQ mode on a time bound manner and mark yourself or let some institution taking the examination mark you and rank you so that you have a good idea about where you stand amidst the state and national forum, and also can strengthen your skills and build up on your weaknesses in that manner
• That according to me is the best plan layout for scoring 600 plus in NEET and getting into a college of your choice since it will not only help you with your question selection and time management skills but will also give you a profound base for the subject you are going to study in future in your medical career

First and foremost book required for NEET is NCERT Textbooks of 11th and 12th standards of Physics, Chemistry and Biology. 

Other good books which can be referred for NEET are as follows :-

For Physics :- Concepts of Physics by H. C Verma,  Fundamental Physics by David Halliday and Resnick , Objective Physics by D.C Pandey, Numerical Physics by I.E Irodov.

For Biology :- Trueman's Elementary Biology, Objective NCERT -Biology at Your Fingertips , Physiology and Biochemistry by Salisbury and Ross.

For Chemistry :- Chemistry is divided as Inorganic, Organic and Physical chemistry. 

For Inorganic Chemistry :-  Concise Inorganic Chemistry by J. D Lee,  Inorganic chemistry by O.P Tandon.

For Organic Chemistry :- Organic chemistry by O.P Tandon, Organic Chemistry by Morrison, Organic chemistry by T.W Graham Solomons.

For Physical Chemistry :- Numerical Chemistry by R.C Mukherjee.

If you still have any queries feel free to ask in the comment section down below.

Hey.

Here is a list of the best sources of books and publishers that you can use for preparing for NEET for each subject. You can use any of these according to your requirements along with a thorough reading of NCERTs.

BIOLOGY-

NCERT Biology Class XI and Class XII textbooks

 Biology Vol 1 and Vol 2 by Trueman

 Objective Biology by Dinesh  

Objective Botany by Ansari  

Pradeep Guide on Biology  

GR Bathla publications for Biology  

CHEMISTRY-

NCERT Chemistry textbooks for Class XI and XII  

Physical Chemistry by OP Tandon  

ABC of Chemistry for Classes 11 and 12 by Modern

 Concise Inorganic Chemistry by JD Lee

 Dinesh Chemistry Guide  

Practise books by VK Jaiswal (Inorganic), MS Chauhan (Organic) and N Awasthi (Physical)

PHYSICS- 

 NCERT Physics Class XI & Class XII  

Concepts of Physics by H. C. Verma

 Objective Physics By DC Pandey

 Fundamentals of Physics by Halliday, Resnick and Walker

 Fundamental Physics by Pradeep

 Problems in General Physics by IE Irodov  

Best of luck