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.
- Final audio file in WAV format.
- All background noise must be removed.

Ideal Skills and Experience:
- Proficiency in audio editing software
- Experience in voice isolation and noise removal
- Attention to detail and high-quality output

Please ensure the final product is clean and professional.