I took the nov 2016 and studied quite a bit (a month before the exam 1-2hours everyday + courses as i am 2nd year undergrad with full course load), bought the datboot camp for PAT, used the free online notes and just review general bio and chem note. I felt i did really good but got: RC 19, BIO, 21, CHEM 19, PAT 22
Then I retook in feb 2107 because i didnt like my chem mark and this time around i only studied 2 weeks before the exam. I didnt have the datboot camp stuff either, I just did all the free online PAT. Reviewed major topics of bio and chem. After the 2017 feb dat, I felt it was a bit harder, especially the PAT, reading was about the same, and bio+chem are hit and miss. I got RC 19, BIO 21, CHEM 23, PAT 23.
Really happy that i retook it