Hii Avanthika!
As an estimate from last year almost 3,590 seats are filled up through NIFT entrance examination across India into bachelor's of design and fashion technology courses. NIFT is the gateway for all fashion designing courses in india including B.Des. NID also conducts entrance for designing courses. Usually the application forms are released in the month of October and November and ends in December and January. The NIFT ( GAT and CAT ) have been conducted on 19 January, 2020. So, now you need to keep an eye and fill the forms next year. The link given below may help you -
https://www.google.com/amp/s/design.careers360.com/articles/nift/amp
Hope this helps.
Good luck!