Voice Isolation for Recording

I need an audio editing expert to modify a 1-hour voice recording of my mother and me. The goal is to remove my voice entirely or as much as possible, leaving only what my mother says. Requirements: - Remove my voice with immediate transitions to my mother's, no pauses... (Budget: $30 - $250 USD, Jobs: Audio Editing, Audio Engineering, Audio Mastering, Audio Processing, Audio Production, Audio Services, Sound Design, Voice Talent)