I can only think of hardware solutions. Get a noise gate and set that up. A noise gate will cut off the mic whenever audio goes below a certain threshold. Migt be a godo idea to coupel that with a compressor to make you volume more even. Just a thought back to my sound man days. Ther emight be some sort of noise gate software out there do a search.

The wit of a misplaced ex-patriot.
I cheated on my metaphysics exam by looking into the soul of the person next to me.