If you are having fun and you are still in one piece, you are making good progress.
In general, athletic people with experience in sideways sliding sports can progress very quickly and people between 8 and 20 learn quicker than people of other ages. But everyone is a unique individual and picks up riding at a different pace. I've had a 7 year old riding comfortably on our advanced beginner slopes in an hour and I've had skilled athletes who just weren't going to get it after 10 days. Good instruction can speed up the process. But when you start thinking about how fast you are learning you start holding back the progress you could be making. Half of the fun is getting better no matter how fast you do it. If it helps any, a lot of beginners make very slow progress until they learn to use their edges. Once they get the feel of riding on the edge of the board, things "click" and they make very rapid progress from that point on. Personally, it took me probably over 15 times on a board, starting with an hour here and two hours there, before I was slightly better than pathetic. Within the next 10 times after that I was riding black trails at Wolf Creek.
Your mileage should vary.