NTA considers that you must have at least 50% aggregate marks in order to be eligible for NEET. Now as you have 54% marks which is a >50% so you are eligible for the exam. Nothing to worry about it.

I would recommend you to take good preparations for the exam since due to covid a lot of extra time is offered to the students and as a result there can be a possibility of hype in the score of NEET.

For important tips regarding NEET visit the link below. It contains some really important tips from the experts which will really guide you to score better in NEET.

Visit the link below:

https://medicine.careers360.com/articles/neet-preparation-tips

I hope my answer helps. All the very best for your future endeavors!