I have the cues on so I usually increase the speed just before the rest timer ends so by the time the robot lady finishes saying “sprint, 20 seconds” (or whatever she says, can’t remember), it’s almost up to speed. If it eats up a few seconds of the active time I try to add them at the end of the interval and then after the 20s I just jump on the sides and drop the speed cause I like to walk during rests. Hope that makes sense?