Hmm on a scale of pass or fail I say 7 of 10 at passing. It seems very mellow tone but not deep. I would say any regular person wouldn't notice. As for your voice becoming deeper as you talk it's just your vocals returning to normal of what they know. Basically you have to exercise your voice to keep it fem. Which is something I've slacked on unfortunately because I have the same issue.
But to be honest I'm not far off from you. My voice still sucks as it's deep if I stop thinking about it. We're in the same voice boat. lol
Best tips
Swollow slightly to raise the voice box up
Contract your throat with high notes.
Become a self chitchat in the car. lol
