CBSE 12th

Hello Aditya,
I understand that you need a bit more time compared to others in understanding a topic and I appreciate your desire to crack JEE entrance examination. However, you should not hesitate to join a coaching institute just because of this.
In your case, I would suggest you not to join any commercial entrance coaching institutes. The reason is they have too many students in every batch. Mostly they jump to the next topic as soon as MAJORITY of the students are done with the current topic I.e. they might not pay enough attention to ALL students, particularly the weak ones. So, that would result in wastage of money. You can still have a word with the institute of your choice - FIITJEE and check if they have a batch with less students or any special batch or services for the weak students.
I would rather suggest you to opt for non-commercial tutors who don't teach in institutes. These are mostly teachers teaching in schools, who have a much smaller batch size, cover each topic completely, pays the most attention, mostly teaches in their homes but are very difficult to find.
Take decisions judiciously. All the best!
I hope I have been able to answer your queries to your satisfaction. If so, kindly upvote this answer. If you've any further questions, kindly revert.