The minimum age for class 10th board is 15 years. As you are appearing for the examination in 2023 then you are eligible for the examination and you have nothing to worry about. The eligibility criteria (for most boards) is that the student must have 15 years of age by the end of the year i.e., December,2023.

For class 10 preparation tips visit the link below:

https://school.careers360.com/articles/cbse-class-10-preparation-tips

I hope this answer helps. All the very best for your future endeavors!