It is possible to switch from a 5-year integrated LLB to a 3-year LL B, but it will be subject to the university's policies and the Bar Council rules. Integrated LLB courses (like BA LL B or BBA LL B) integrate a bachelor's degree with law studies, while a 3-year LL B necessitates an earlier undergraduate degree. If you have already done enough courses in the integrated program, credit transfer can be done by some universities, but in general, you would have to begin the 3-year LL B new after gaining a bachelor's degree.
To transition, you might have to drop out of the integrated program and apply separately for admission to a 3-year LL B from a university that provides it. Certain institutions may accept earlier legal studies coursework, but this is not standard. You should inform your current university administration or the new institution's admissions office about eligibility, transferring credits, and application for admission. Make sure the new course is accredited by the Bar Council in case you are interested in practicing law sometime in the future.