You mentioned your expected score in NEET UG 2021 is under 551 out of 720. If you fetch 350, your overall percentile ends up around 96.6 - 97.1 while your AIR may end up somewhere around 48887 - 59037 considering difficulty of the paper to be moderate. You didn't mention your caste so, I assume you belong to General category.

For admission in National Institute of Ayurveda, Jaipur, being a general candidate you should score at least score 450 or above out of 720 . You mentioned you expect 551 marks in NEET UG 2021. With this score you have very good chances of getting admission at NIA Jaipur.

Please note that cutoff changes significantly every year and depends on various factors like availability of seats, number of students appeared, difficulty of question paper etc.

To know more about NEET UG overall Cutoff trends, follow this article:

https://medicine.careers360.com/articles/neet-cut-off

To know his admission chances in medical/dental colleges with NEET Score, to get a personalized report with Top MBBS & B.D.S Colleges and to check course & counselling wise cut-offs of NEET for various state quotas, caste groups etc., I encourage you to use NEET UG 2021 College Predictor or share this tool with the candidate:

https://medicine.careers360.com/neet-college-predictor?utm_source=qna&utm_medium=neet_rp

I hope you find this information helpful. I wish you all the best for your future and career.

Thank you.