There are no restrictions regarding the drop before CLAT. So yeah! you can take drop before CLAT after 12th. Also as CLAT didn't have any age limit, so you have no pressure regarding the ineligibility from this perspective as well.

Through CLAT you can go for the Integrated LLB programs. The eligibility requirements are:

1. The candidate must have passed 10+2.
2. The candidate must have secured atleast 45% (UR) marks in 10+2 and 40% (SC/ST) marks in 10+2

To know more about the CLAT visit the link below:

https://law.careers360.com/articles/clat-eligibility-criteria

I hope this answer helps. All the very best for your future endeavors!