The syllabus of JEE MAINS is similar to that of the 11& 12th syllabi of the NCERT & the syllabus usually won't change every year. So if you are preparing for 2023 consider the syllabus of 2022.

The JEE MAINS syllabus is provided below:

Physics:

• Physics and measurement
• Rotational motion
• Thermodynamics
• Kinematics
• Work, energy and power
• Properties of solids and liquids
• Gravitation
• Laws of motion
• Oscillations and waves
• Electronic devices
• Kinetic theory of gases
• Current electricity
• Communication systems
• Electromagnetic induction and alternating currents
• Magnetic effects of current and magnetism
• Optics
• Electromagnetic waves
• Atoms and nuclei
• Electrostatics
• Dual nature of matter and radiation

• Experimental Skills

  Recommended

CHEMISTRY:

A. PHYSICAL CHEMISTRY:

• Some basic concepts in chemistry
• States of matter
• Atomic structure
• Chemical bonding and molecular structure
• Chemical thermodynamics
• Solutions
• Equilibrium
• Redox reactions and electrochemistry
• Chemical kinetics
• Surface chemistry

B. ORGANIC CHEMISTRY:

• Purification and characterisation of organic compounds
• Hydrocarbons
• Chemistry in everyday life
• Principles related to practical chemistry
• Organic compounds containing halogens
• Organic compounds containing oxygen
• Organic compounds containing nitrogen
• Polymers
• Some basic principles of organic chemistry
• Biomolecules

C. INORGANIC CHEMISTRY:

• Classification of elements and periodicity in properties
• Hydrogen
• Block elements (alkali and alkaline earth metals)
• P Block elements group 13 to group 18 elements
• d- and f - block elements
• Co-ordination compounds
• Environmental chemistry
• General principles and processes of isolation of metals

For more information regarding JEE MAINS consider the link below:

https://engineering.careers360.com/exams/jee-main

I hope this helps. Goodnight!