Hello

The basics things to crack neet exam are:

Go through the syllabus well and select chapters having high weightage,go through the exam patten and go for the best book . Study 8 to 10 hrs if you have  4 month .

The most important thing is solve as much question as possible . Go through previous years question papers and solve it. Go for mock test at last .

You can visit the following link to get the syllabus of neet 2021

https://www.google.com/amp/s/medicine.careers360.com/articles/neet-syllabus/amp

Good Luck.