Some things do not change. My UPT experience was 43 years ago. I instructed in the T-38 following UPT, was a FAC in Vietnam, and flew the F-100 in a Guard unit. What "Adlerdriver" is telling you is on target WRT to attitude, study habits, and "Chair Flying"--it's how I got through UPT. The game is the same--Cooperate and Graduate. These principles also worked very well throughout thirty years with Northwest Airlines.
As an IP, I sometimes had a student plan and fly a "round-robin" flight at 600 knots ground speed. This was an excellent prod for those doing well with the standard syllabus but who were inclined to relax as a result. It is just as easy to get in a 480 knot rut as any other. The jump from 120 to 480 won't be the only challenge you face. Use what you know already, but don't rely on it to get you through.