Level 1: At around 13 seconds, play a bit riskier and jump a bit farther on the platform to not waste time At around 21 seconds, don't jump that small gap, instead, go straight towards the goal. At around 25 seconds, make sure to jump directly into the goal instead of landing on the platform. Level 2: At around 29 seconds, make sure to keep going straight, turning is just wasting time. At around 48 seconds, like level 1, go straight into the goal, don't land on the platform. Level 3: At around 55 seconds, don't turn, you need to go straight to the corner. Level 4: Not really an expert on 4, I'm sure there are other shortcuts and small time saves but I don't know. Level 5: At around 1 minute and 41 seconds, when starting make sure to stay straight. At around a minute and 50 seconds, make sure to play riskier and jump to the corner of the platform. You need to be less afraid of falling and play riskier jumps.
Hope this was helpful!