Did you video your sets or get feedback from someone watching you. Its very hard to really gauge your form as a newbie by feel alone. Generally reasons for a reset would be either significant form issues and/or missed reps (i.e., missed depth on squats, or just failure to complete your 3x5). And if it is missed reps, give it 2 to 3 workouts before resetting (read the first 3 questions article too). There is no shame in getting to 8 to 10 minute rests. its going to happen eventually if you are doing the program properly. I share this as many people (myself included) squander LP by resetting too often. I know I did. On the flip side, many people screw themselves by increasing weights while ignoring obvious form issues (depth on squats, rounded back on DL).....again I did this as well to myself