This was my first attempt. I had started my preparations during the third week of February and studied 2 hrs everyday till 23rd April (4 hrs on weekends). I was very confident about the PM (geotechnical) but very skeptical about the AM exam. However, I found the AM exam to be very easy and the only question I couldn't answer was due to unavailability of a reference. The PM session (geotechnical), albeit intense and exhausting, was good. I may have gotten more than 36 questions right. To summarize, I felt quite confident of passing after the exams but my confidence waned gradually with time. Fortunately for me, the result was positive.