Hello there,

Congratulations for completing your degree!
For joining LLB program in any law college, one needs to only give the separate exam the university would conduct and not CLAT.
CLAT is for 5 year LLB program that is for undergraduates and for LLM.
Post graduate LLB program in any university is of 3 years. The cut off also given by the University itself.
Wishing you the best.