You did a commendable achievement being able to play this difficult sonata. I have a suggestion. You may be at a perfect stage to refine your playing even more by getting the instruction of a professional pianist who participated in the 18th Chopin International Competition in Warsaw. His name is Denis Zhdanov, and he has the best piano masterclasses on KZbin. Most classes are free, but even the ones he charges for are worth every penny. After I found him a month ago I am completely sold on his teaching, which is improving tremendously my own playing.