The good news is - it's one helluva'n improvement and some take years to get to where you are now in a couple of months so you are doing REALLY well whatever you may have told yourself!
I would actually think your Doc was thinking you'd only be at the start of the journey down towards 10 - not nearly there, at all.
He actually knows (as do all of us so you need to take it on board too) that Diabetes is a marathon - NOT a sprint, and you ALWAYS need to keep trying, it never actually stops though some time in the future, you can actually relax a little bit from time to time.
Just look forward to getting there - in my case it took about 35 years LOL