Yes, you are likely eligible for JEE (Mains and Advanced) 2025 as a private candidate based on the current eligibility criteria.

JEE typically requires Physics, Chemistry, and Mathematics for appearing in the exams. Since you have Physics, Chemistry, and will be taking Maths as a private candidate, you'll meet the subject requirement.

CBSE allows students to appear for exams as private candidates. Appearing for Maths as a private candidate shouldn't affect your eligibility for JEE.

While the current eligibility criteria suggest you should be eligible, it's always recommended to refer to the official JEE website or brochure for the 2025 exam year for any updates: JEE Main.

The registration process for private candidates might differ slightly from regular students. Make sure you understand the specific guidelines for registering as a private candidate for the Maths exam.

Some colleges might have their own eligibility criteria on top of the JEE exam requirements. Research the specific colleges you're interested in to ensure you meet their standards.

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

I hope it helps!