Hi

To be honest increasing your marks by 200 in 10 days is going to be really difficult but  still you can try.

Focus more on ncert as around 90 % questions in neet are from ncert, some Important chapters for neet as per their previous year weightage in neet question papers are listed below subject wise , stress more on these as you have less time :-

PHYSICS

Optics - 10% weightage

Semiconductors- 9%

Dual nature of matter ,atoms and nuclei-9%

Thermodynamics -9%

Electrostatics-9%

Current electricity -8%

Electromagnetic Induction & Alternating Current-8%

Laws of motion & work power energy-7%

Magnetic Effect of Current & Magnetism-5%

System of Particles and Rotational Motion-5%

CHEMISTRY

Coordination Compounds- 9%

p-Block, d- and f-Block Elements- 9%

Thermodynamics- 8%

Equilibrium -6%

Chemical bonding and molecular structure-5%

Solutions- 5%

Organic Chemistry: Basic Principles & Techniques- 4%

Alcohols, Phenols and Ethers :-4%

Aldehydes, Ketones and Carboxylic Acids-4%

BIOLOGY

Human physiology:- 20%

Genetics and Evolution:-18%

Diversity in living organism:- 14%

Biology and Human Welfare:-9%

Reproduction:- 9%

Cell: Structure and Function:- 9 %

Plant Physiology:- 6%

Ecology and Environment:- 6%

*Solve previous NEET year questions :-it will let you know the examination pattern, type and difficulty level of questions, also concepts behind the question often gets repeated, so you should definitely solve year papers

*Go through NEET mock test papers , it will let you know your preparation level and and weak areas so that you can work on them and perform well in your examination

Thank you