I haven't heard where you were as a point of comparison but what you are doing is starting to take shape. You are starting to make the changes which is always good, especially on a tune like this, but there are parts that is really just jiving. I'd focus more on really nailing the changes which can be a bit of a dull exercise but once you have them in your ears and under your fingers then you can really create ideas over it. There are nice ideas appearing already but you never seem to develop them and then just waffle on to fill space until you arrive at a part where you are more comfortable. I'd recommend slowing it down again and really nailing all the changes. The slow tempo will also stop you jiving more as well, don't be afraid to leave space and try to develop an idea a bit more. Check out Sonny Rollin's solos which are just a masterclass in developing ideas.
As I said though it is finding its feet feet though and the tune isn't easy at all. If anything this is now making me want to revisit it, I haven't played much outside of a walking line on this tune for a long time. Should blow the dust off!