Hello Adi,

Although there is no limit on the number of attempts for WBJEE exam, it is never advisable to drop 4 years for any college, not even the top IITs, rest aside JU. You might not face any problem upfront but it will definitely create disastrous effects during placements and in your future career.

So to answer your question, Yes you can clear JU with proper preparation after dropping 4 years but it is never recommended.

Take your decision wisely and all the best.