Voice Overs Will Cover a Multitude if Sins

We have finished our shoot with our child star. I'm still waiting to do the voice overs but everything seems to be coming together beautifully. Our footage was great, our star was engaged with the material and our main star was engaged with our child star.

As I'm cutting everything together I am a little nervous about the voice overs. There isn't a lot of time that I want to spend away from the action. Right now I have everything around 3 minutes but there's a lot of "dead-air" with a little action and no dialogue. I'm hoping I can cut that down a little but with the voice-overs.