Yes, you will be eligible for NDA - II, 2022.
This is because,
The upper age limit for NDA is 19.5 years and with your date of birth in 2004 , you will be only 18 years old in 2022 i. e less than 19.5 years and thus eligible.
NDA eligibility criteria says that:-
* For army , candidates with educational qualification of 10 + 2 in any stream are eligible. To be eligible for NDA examination for Navy and Air force, only candidates having educational qualification of 10 + 2 with Physics and Maths are eligible.
* one must be in the age group of 16.5 to 19.5 years old to be eligible .
* one must be Indian to be eligible .
* Only male candidates are eligible and the candidate must be unmarried .
*The minimum height requirement for nda is
Army/Navy - 157 cm
Air Force - 162.5 cm
For details you can visit our page, the link for the same is provided below