Assalamu Alaikum...
If you have a dream of a duet, then you should study (Buet, Ruet, Chuet, Quet, Butex, etc.) like the students who have a chance, you should know like them. Because the duet is nothing less than the Buet! So you have to do well in non-departments (Mathematics, Physics, Chemistry, English) to get a chance here for the first time.

Besides teaching your 1st-3rd semester non-department books in technical classroom, the chapter covered in your duet syllabus will be covered and repeated questions will be solved in duet. As a result you will get a good idea of ​​non departmental part of duet in 3rd semester itself and most of it will be over. As a result, you are going to get a chance for the first time in your dream duet.