From 60 to 70 cm. 15% great distance. I’d say that looks like improvement.
Snellen, outdoor. From what you describe, it seems you’re noting positive changes. Along with the centimeter improvement, seems like right track to me!
Yes it seems a half diopter drop for first normalized is good.
Note that you want at least 1 diopter (to 1.5) between differential and normalized. Perhaps after 3-4 weeks of new normalized and good new habits with those, time to consider reducing differentials. 🙂 You’re doing it!