My un-educated guess would be that you won't be able to do what your asking. Since you didn't state it in your post I'm guessing you didn't use a blending agent when you attempted the spot repair.
Blending agents are meant to react with the solvents of the fresh clear which was just laid. Their purpose is to "melt" the new clear into the old so you don't have the issues you got. Even with the proper use it's a art to get it just right.
If you didn't use any before I'm guessing you'll have to sand down the panel and either try spotting the clear (using a blending agent this time) or re-clear the entire panel.
If the panel isn't hard to mask from the rest of the vehicle I'd just re-clear the whole panel and be done with it.
Thoughts and comments expressed by me are mine based on my own experience and research and shared here freely. I am not a professional nor make any claim to be as such