Hi,
For biology you just have to study ncert , no need to go for other reference books , the paper will be simple than neet exam.
Important chapters for chemistry include mole concept , electrochemistry , equilibrium , Aromatic compounds , aldehydes , ketones and Carboxylic acid.  For inorganic chemistry focus mainly on p block elements and transition elements.
For physics go through all curves of velocity and acceleration,  young modulus of elasticity,   force , torque , buoyancy , electric and magnetic effects of current,  Lenz law , potential difference , quantization of charge , lenses and their combination,  dopplers effect , refraction , diffraction,  total internal reflection .
These are all important topics so do prepare them.
Hope it helps...

Hello aspirant,


Chapterwise weightage is as follows;
BIOLOGY CHAPTERWISE WEIGHTAGE

• Diversity in Living World 14%
• Cell Structure and Function 5%
• Structural Organisation in Animals and Plants 9%
• Plant Physiology 6%
• Human Physiology 20%
• Reproduction 9% Genetics and Evolution 18%
• Biotechnology and Its Applications 3%
• Biology and Human Welfare 4%
• Ecology and environment 12%

CHEMISTRY CHAPTERWISE WEIGHTAGE

• Basic concepts of chemistry 2%
• Structure of Atom 3%
• Classification of elements and periodicity in properties 3%
• Chemical Bonding and molecular structure 5%
• States of Matter: Gases and liquids 2% Solid-state 2%
• Thermodynamics 9%
• Equilibrium 6%
• Redox Reactions 1%
• Solutions 5%
• Electrochemistry 4%
• Chemical kinetics 3%
• Surface Chemistry 1%
• General Principles and processes of Isolation Elements 1%
• Hydrogen 3%
• s- Block Elements (Alkali and Alkaline earth metals) 1% p-Block elements 1%
• d and f Block Elements 4%
• Coordination compounds 4%

Organic Chemistry -

• Some Basic principles and techniques 2%
• Hydrocarbons 3%
• Haloalkanes and Haloarenes 1%
• Alcohols, Phenols and Ethers 8%
• Aldehydes, Ketones and Carboxylic Acids 3%
• Organic Compounds Containing Nitrogen 1%
• Biomolecules 3%
• Polymers 3%
• Chemistry in Everyday Life 4%
• Environmental Chemistry 1%

PHYSICS:

Physical World and Measurement, Kinematics, Laws of Motion, Work, Energy and Power, Gravitation, Motion of System of Particles and Rigid Body, Properties of Bulk Matter, Thermodynamics, Behaviour of Perfect Gas and Kinetic Theory, Oscillations and Waves, Electrostatics, Current Electricity, Magnetic Effects of Current and Magnetism, Electromagnetic Induction and Alternating Currents, Electromagnetic waves, Optics, Dual Nature of Matter and Radiation, Atoms and Nuclei, Electronic Devices and Communication Systems.


MATHEMATICS:

Sets and Functions, Algebra, Coordinate Geometry, Calculus, Vectors and Three-Dimensional Geometry, Linear Programming, Mathematical Reasoning, Statistics and Probability, Statics and Dynamics

Agriculture:

• Agrometeorology
• Genetics and Plant Breeding
• Biochemistry and Microbiology
• Livestock Production
• Crop Production
• Horticulture

There is limited time left for AIEEA UG, so you should be focusing on your preparation by revising the chapters and solve mock test as well as previous year question papers. It will boost your confidence, pace up your speed, helps in time management and helps in your preparation.

For solving sample papers go through the following link;

https://www.nta.guru/p/nta-icar-aieea-ug-question-paper.html?m=1

In this lot less time it is difficult to study entire syllabus so , Careers360 brought in the crux of entire syllabus through our Crash Course and it can help you in Physics, Chemistry, Biology and includes most asked concepts along with difficult concepts.

https://learn.careers360.com/neet-crash-course-rank-booster/?icn=neet-crash-course-rank-booster&ici=neet-text-mapping


Hope this helps!!
All the best!!