Good morning Aimee,
Welcome and I'm glad you have reached out to us for advice and our experiences. It sounds as if you are having a very positive recovery this early. That's great!
I do hope you are using some eye drops and ointment to help maintain a healthy eye while the nerves recover. This is most important. You don't want to get a scratched cornea. There are many brands to try,, Systane, Refresh come to mind. I used ointment at night early on,, the Refresh PM. Then I liked the gel drops during the day,, and still use them some. They seem to be a little thicker than regular lubricating drops.
If you have this much change at 3 weeks,, I would imagine you will see much more healing and nerve recovery very soon. Just keep your eye moist until then.
Congrats on getting through treatment and on to recovery now. Keep us updated. We are here for you.
Jane