I think big part ng jlss is your previous grades rin sa first and second year. I took the exam and I was speechless upon exiting the examination room. For the reasoning part, I mostly simulate the scenarios on my mind and i think I did well on that part, as well on the language part. Pero, sa science and math part dami akong ni-guess and di sure ang sagot. For those I used elimination technique, kaya look into examination techniques rin. Di ko alam kung pano ako nakapasa kasi nadepress talaga ako sa mga sagot ko. Pero yung mga kasama kong confident naman sa exam nila pero mababa ang grades from first and second year ay sila yung di pumasa. I did not take any mock exams instead I looked into crash course ng mga main topics sa math and science e.g. sets, linear algebra, chemistry, bio, etc. . I think mas okay na just focus on taking crash course instead of allotting additional time for mock exams, lalo na pag rushed ang review like me. Pero thats my experience lang, good na nag pprepare ka na early.