Hello Aspirant,

No you cannot appear for JEE-Main 2023, this is because your passing year of class 12th would be considered as 2020 although you pass Mathematics additionally from any open or private board in 2023 but you will not be eligible for JEE-Main 2023. Also note that Mathematics as an additional subject is not allowed for JEE-Main but it should be the compulsory subject in 10+2 and you are going to have it additionally so as per this point also you are not eligible for JEE-Main.

For your reference complete JEE-Main eligibility criteria is mentioned below :-

1--- Age criteria :- There is no age limit to appear in JEE-Main but note that there might be the age limit in any particular institution taking admission through JEE-Main score, so you should keep this thing in mind.

2--- Qualifying Examination :- To be eligible for JEE-Main one should have passed 10+2 examination with Physics, Mathematics as mandatory subjects along with one of the Chemistry/Biotechnology/Biology/ Technical Vocational subject from any of the recognized central or state board.

3--- Year of qualification :- For JEE-Main 2023 only those candidates who have passed Class 12 / equivalent examination in 2021, 2022 or 2023; or those who will be appearing in Class 12th / equivalent examination in 2023, would be eligible to appear.

For more details kindly check out the link given below :-

https://engineering.careers360.com/articles/jee-main-eligibility-criteria

I hope this information helps you.

Good Luck!!