NTSE is a very prestigious exam and clearing it will boost up your confidence and will also give you monetary benefits till the time you do your studies. If you are not satisfied with your preparation you are suggested to follow some points:

• Practice past year papers, at least 3 papers will be sufficient. It can boost your memory and gives confident.
• Give special attention to MAT portion. if you can solve that paper excellently you will get selected even if your SAT goes average.
• For SAT I'll suggest to revise formulas in maths and science for several times in next few days and make a table for study plan if  any topic you feel needs revision. If you thoroughly read text books SAT will be easy.
• Mentally prepare yourself for the challenge. Know that you can do it. That's mostly necessary in last few days.

All the best.

If your preparation isn't satisfactory. Try to read things which you can coup up easily. It can be Logical Reasoning or any other topic which you can do faster. Try to learn those stuffs fast. solve previous year questions as much as possible and try to take notes of important concepts in a sheet which you can revise in this short period of time.

Study hard. Don't think of the results. As you know you have less time , so don't make your mind full of gloomy thought and try to do as much as you can of the NTSE syllabus.

Have a great eve!

All the best!