It's good you are taking action...I have very similar to how you describe. I had several repeated visits to my current doc, before even being referred to Ent. I first had bouts of losing my voice 20 years back....to this day, nobody knows what the "problem" is. I'm lucky for now, as I work from home, who knows what the future brings, right? I worry also, I'll completely lose my voice in time.
Good luck, please do keep us posted. I'd be really interested to know how you go x