My date of birth is 2/4/2004 so when will be I eligible to give neet and aiims?
If you are asking for this year NEET and AIIMS, sorry but you are not eligible because the minimum age should be 17 during the year of admission or 17 up to 31 December of admission year.
NCERT at your fingertips is a basic medical level book based completely on NCERT and can be used for understanding NCERT concepts better.
https://medicine.careers360.com/articles/neet-eligibility-criteria/amp
https://www.google.com/amp/s/medicine.careers360.com/articles/aiims-mbbs-eligibility-criteria/amp
There are many books available for the preparation of the same. You can opt for toppersnote study pack for neet and aiims. Also there are crash course books like one of arihant 40 days crash course for neet. This link will also assist you in finding the best books for the preparation.
https://medicine.careers360.com/articles/best-books-for-aiims-mbbs/amp
But I am still in doubt that the neet exam will be in May and I will be complete 17 in the month of April so I will still be eligible?
Most Scoring concepts for NEET
This ebook serves as a valuable study guide for NEET exams, specifically designed to assist students in light of recent changes and the removal of certain topics from the NEET exam.