If you came the "college route" in an approved 3 or 4 year Cadet programme, and graduated, you are already exempted from 2nd and 3rd Class theory exams, ie applied mechanics, mathematics, electrotech, thermo, naval arch and drawing. All you need to is EKG, EKM and Orals at either 2nd or 3rd Class. You need 12 months for 3rd after getting enough time for 4ths, then another 12 months for 2nd. So, 36 months for 4th, 12 more for 3rd, then 12 more for 2nd.
If it was a one year programme for PSME, start hitting the 2nd Class Applied Mechanics. There's a little more to it than 3rd, but not all that much, and a pass exempts you from mechanics AND mathematics at 3rd class level. Applied Mechanics Exams are every Wednesday morning at 0830, cost is $27:50 and advanced notice of about a week is required.
Discourage incest, ban country "music".