Sorry to inform you, gap is a rejection for appearing in NEET.But no need to discourage yourself ,you have plenty of other chances .So don't make yourself dishearten .

Dear Ayan,

According, to new eligibility criteria gap year between class 11 and 12 is not permitted for NEET exam.

To check the complete eligibility criteria you can refer below link

https://medicine.careers360.com/articles/neet-eligibility-criteria

Good Luck!!