Hi

No, only class 12th syllabus is not enough for BHU entrance exam.

This is because,

In your BHU entrance exam, questions are there from both class 11 and class 12th dear and thus you need to study and prepare both class 11th and 12th syllabus for BHU entrance exam.

Also,

you can make routine or timetable to prepare in a better way and, your routine should revolve around things i.e study, revise and practice

And after u  finish each chapter you should practice questions

Solve previous year BHU Entrance EXAM  questions :-it will let you know the examination pattern, type and difficulty level of questions etc

THANK YOU