Yes, pursuing a dual MSc BE in BITS Pilani is a very tough and tedious journey. One of my friends ended up going for a dual degree and considers it a complete waste of time. Here is a synopsis of the entire journey.

• First year: The first year is the deciding time for your BE degree so dualities have to work hard and score a high CGPA. 
• Second year: This year is relaxed as you will be taught only the courses from your first degree (MSc Degree).
• Third year: It's from this year that your dual degree flaws will start becoming prominent. While the single-degree students will be busy with humanities electives, you will be busy with compulsory discipline electives in both your degrees. This is also the year that will make you realize which degree you want to pursue professionally. However, by this time you will have 2 degrees to pursue so you won’t be able to give the degree you like enough time. 

• Fourth year: This year again is very challenging especially if you do PS for two semesters. You will have to study eight courses without any breaks. Because of this your other degree will suffer and result in poor CG. Your PS chances will be affected in turn that depends on your grades. 

• Fifth year: The fifth-year welcomes the most dreaded thesis. While your counterparts will have to do two discipline electives and another two humanities, you will be doing a 15 credits course alongside sitting for placements. According to the new rules, it is compulsory for students to do a thesis in one degree and PS in the other. Usually, students prefer doing PS in the degree of their choice so a thesis in the degree of not your choice is very difficult.

Overall, I feel that a dual degree is a waste of time and you should reconsider your decision if you are planning to get one.