dear student

There is no cap for number of attempts

you can appear for NEET as many times as you want till you satisfy upper age limit criteria which is 25 years for Unreserved candidates and of 30 years for reserved category candidates.

for more details about NEET eligibility criteria kindly visit

https://medicine.careers360.com/articles/neet-number-of-attempts-and-age-limit

hope this helps

All the best!!!