Hey Rakhi.

If you are taking about LSAT India which is an entrance test for admission in various colleges in India like Jindal Global Law School, UPES Dehradoon etc then it takes place only once in a year in the month of May-June. So you will have to take the test at the same time only even if you drop one year.

But if you are talking about LSAT, the entrance test for admission in Law Schools Abroad then it can be taken multiple times. Like this year it could be taken in March as well as in January. So you will be able to take the exam in January itself after dropping. You will have to check the official site for the exact time you're eligible to appear for it.

Best of luck