4 month enough if start today for neet

As per your query about duration 4 month is sufficient or not...I would like to mention even from today i.e. 3/1/2018 its almost 4 months means  around 120 days....
If you considering time only after your 12th exam as preparation times , i would say its not sufficient if you have not studied anything prior for NEET...
It would be better to start preparation for NEET and state board together, 30% time for state board and 70 % for NEET....
Know the exam pattern properfly, if you have any query we can help
don't go for many books select NCERT + ONE MCQ BOOK+ ONE REFERENCE if required, remember your target is NEET MBBS not phd..
Solve s much MCQS as you can daily and correct yours mistakes with sincerity and dedication...
Maintain health... A active mind is present in a healthy body
Give mock test in between to assess yourself
Think positive. You will achieve what you think unacheivable
Hopefully above points will help
if you want any other information plz let us know
Regards
Dr. Parmanand Agarwal
MBBS MD
Career counsellor.

If all your concepts are clear and strong then 4 months will be enough. Also, I would suggest you to go through the below tips - Know the syllabus - The first thing which you need to know is the complete syllabus and accordingly prepare. Important topics- Physics – Optics, Mechanics, Nuclear Physics, Thermodynamics, Chemistry – General Organic Chemistry, Mole Concept, Periodic Table, Coordination Chemistry, Chemical Bonding. Biology – Genetics, Ecology & Environment, Cell Biology, Morphology, Basics of Biotechnology, Reproduction, Physiology of Animals & Plants. Good Study Material - The most important element to prepare for any exam is good study materials as better to choose the standard preparation material. Create a time table as per your schedule - Get a calendar and a diary, set your priorities, set out long study hours. Take care of your health. Don’t sleep during study time. Practice NEET sample papers and previous year’s question paper - All NEET aspirants should do practice on sample and previous years papers as these would be helping them to know the important questions. Prepare notes - The best way to improve memory skills is to prepare notes while studying. Candidates should write down all the important notes in a copy or diary which can be useful for revision before the examination and save a lot of time for them. Online mocks - Start doing online mocks because these will be showing you all your weak areas along with actual paper pattern and accordingly you can practice again and this will also teach you time management skill during exam.

Apart from all these, better to be confident and do not cram.

Books which you can refer - Biology: NCERT Biology of Class XI and XII, Trueman's Biology Vol 1 and 2,Objective Biology by Dinesh, Pradeep Publication's Biology, GRB Bathla's Publication's for Biology. Physics : Concepts of Physics by H. C. Verma NCERT- Physics Part 1 and Part 2 D C Pandey Objective Physics Fundamentals of Physics by Halliday, Resnick and Walker Problems in General Physics by I. E. Irodov. Chemistry: NCERT Chemistry Physical Chemistry by O.P. Tandon Organic Chemistry by Morrison and Boyd for Organic Chemistry Modern’s ABC of Chemistry for class 11th and 12th Concise Inorganic Chemistry by J. D. Lee for Inorganic Chemistry Dinesh Chemistry.

You can get sample papers for your practice through below link -

NEET Sample Papers

Good Luck!!!