Long distance dynamic advice needed

Me and my girlfriend (both 25) have been together for a good while now and im still having a hard time with using only my voice... She wants a soft but degrading dynamic and im all for it, its just I always get a feeling of stage fright/embarrassment while on call or doing voice notes. Its kinda getting to me to be honest because in person it would be a non-issue. I dont want to let her down or make her feel ignored so any advice or guidance would be very appreciated. Thank you 🤙