Why not try playing through a few times with the first note in each group of three in the RH plus the chords/notes in the LH (in other words omitting the 2nd and 3rd semiquaver of each group of three in the RH)? This might enable you to feel the onward flow of each 4-bar phrase.
Do you keep a record of how many hours you have spent practicing this piece? Last year I clocked up 24hours of practice time on Op10 No11 and 24 hours on Op10 No12. I didn't really feel 'on top' of either of them, but I felt that I'd made some good progress.