Hi Rahanul,

These tips will help you score  650 + in NEET UG 2021 :-

• Know the complete syllabus and work accordingly.
• Make an effective study plan and follow it strictly.
• Refer to the NCERT books first and move to high level books.
• Use previous year paper and mock test as a key to score higher by knowing the exam pattern.
• Revise topics again and again as many times as possible.
• Hard work and discipline with smart work will give better results.

You may refer to this source article for more information about How to crack NEET with 600+ Scores.

Feel free to ask doubts in the Comment Section.

I hope this information helps you.

Good Luck!