Congratulations on your excellent score in NEET.

As far as your AIR is concerned, keeping in mind, JIPMER is one of the best Medical Institutes next to AIIMS Delhi, the small intake of JIPMER, and that too since JIPMER doesnt have its own test and intake is totally through NEET, you perhaps have bleak chances and might just make it. The expected cutoff will surely be no less than AIR 400-500 for General Category. However you do have other excellent options at your Rank like newer AIIMS, KGMU Lucknow, CMC Vellore, MAMC Delhi and other top medical institutes.

Do keep a check on the medical counselling procedure and dates. For more information about JIPMER Counselling do follow the link below

https://medicine.careers360.com/articles/jipmer-counselling