I played this years ago and remember struggling with that part. I can go and try it out later, it'll probably be easier for me now. What is your target tempo? Do you have any ideas what's making it fall apart for you? Like, what are you doing that is making it feel difficult?
Any tips (and motivation) to find evenness in the complete score and also any practical ways to improve speed on this specific part? Preferably from someone who's already learned it well. I'm getting to the point where the returns on my practice hours are seemingly smaller and smaller, but I can't just quit the piece before it's nice and even to my standards.