Cuts that overlap just the audio from the preceding shot, with video that moves on to the next point, can save several seconds apiece and those seconds can add up. You just need to have plenty of cutaways.
Audio that is “cut off” unfortunately sounds terribly “cut off in mid sente” … but here’s a stupid trick that seems to work: drop the audio-levels to zero over the space of half a second, not all-at-once. It sort-of sounds like the person changed their mind mid-sentence or mid-word and their voice trailed off, even if (of course) they didn’t. If you do this when you’ve got only the audio playing, i.e. you have cut-away the video to something else, it works. Well, “sort of.” But desperate timelines call for desperate measures. :rolleyes:
Folks when they’re talking have a definite rhythm or cadence to their voice, particularly to their pauses, and you will want to try to match that.
If the talent is available, be sure to review everything with him or her. The talent is “the subject-matter expert,” and “the instructor.” Not you. You are “the technical ‘means to an end.’” You’re the wiz at making one dollar out of a buck fifty.