Hello Rahul

Please complete your Graduation and then join NAtional school of Drama.

Its never too late to join any course. If you  are interested in acting then please get an admission in National school of Drama, the eligibility criteria is as follows

Eligibility Criteria

Students must have done graduation in any stream from any recognized college (In India or Abroad).

Candidates should have participated in minimum six theater productions.

Candidates must have working knowledge of English & Hindi.

The minimum age limit is 18 years and the maximum age limit is 30 years as on 1st July (year of application)

Five year relaxation in age limit will be given to SC/ST candidates.

I am sure you might have got your answer. However , during your Bcom you nust take part in some drama group so that it can boost up your confidence.