See in CAT and many other MBA exams min. percentage required to be eligible is at least 50% in 10th, 12th and graduation for general/OBC category and 45% for SC/ST.

If you are in general category and you have 46% in graduation than you won't be eligible for CAT exam and many colleges.

But still you can give XAT and MAT exam whose scores can be used by many colleges for admission. But again you would need to find and apply in the colleges where such restrictions of min 50% is not there.

As very short time is left so brush up your basics and go through lots of mock test and analyse them. Analysing will help you in working on your mistakes and develop a better strategy to attempt your paper. This will overall improve your marks and percentile.

All the best for your preparations and exams!!