This week has been my longest and most productive week yet. I completed all of my remaining levels, 3-3, 4-1, 4-2, and 5-1. I didn't have any more issues and the one error I was having on 3-3 refused to show itself again and didn't interfere at all. The only challenging part about all this is the time it took.
With that said, next week will be finishing touches. I will go back through the levels, make sure all the sushi is positioned right, add finishing touches to it, etc.