Hello Aspirant,

There is no any kind of hard and fast rule for NEET preparation but you should decide a time duration for a day like how much time you can study for, according to your capability and that time should be quality time rather than quantity time. So study only according to your capability don't take overstress of studies.

Now NEET Syllabus is given below :-

@Physics

Physical World and Measurement

Kinematics

Laws of Motion

Work, Energy and Power

Motion of System of Particles and Rigid body

Gravitation

Properties of Bulk Matter

Thermodynamics

Behaviour of perfect gas and kinetic theory

Oscillation of 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

@Chemistry

Some Basic Concepts of Chemistry

Structure of Atom

Classification of Elements and Periodicity in Properties

Chemical Bonding and Molecular Structure

State of Matter: Gases and LiquidsThermodynamics

Equilibrium

HydrogenS-block Element

Some p-block Elements

Organic Chemistry

Hydrocarbons

Environmental Chemistry

Solutions

Chemical Kinetics

Surface Chemistry

General Principles and Processes of Isolation of Elements

D and F Block Elements

Coordination Compounds

Haloalkanes and Haloarenes

Organic Compounds Containing Nitrogen

Biomolecules

Polymers

Chemistry in Everyday life

@Biology

Diversity in Living world

Structural Organization in Animal and Plants

Cell Structure and Function

Plant Physiology

Human Physiology

Reproduction

Genetics and Evolution

Biology and Human Welfare

Biotechnology and its applications

Ecology and Environment

For more details go through the link given below :-

https://medicine.careers360.com/articles/neet-syllabus/amp

You can also solve the Test series for NEET for better practice of your preparation, you can get the Test series from the link given below :-

https://learn.careers360.com/test-series-neet-may/?product=56&icn=test-series-neet-may-2021&ici=exam_page

I hope this information helps you.

Good Luck!!