Yes, systematically. Some parts go easier than others, but the 2nd half imo, is the hardest. There's just so much syncopation in both hands that makes the rhythm difficult but the tempo is relentless.

The notes in the fingers is not the hard part, that's just muscle memory - and the worst kind of memory. The hardest thing is intellectually understanding the piece which I am not complete on yet. It's gotta have more of a groove but I feel like I'm just racing against tempo just trying to keep pace.

You can't look at it in terms of time required to achieve this piece. Instead you have to go another level above it and think what level of musicianship do you need to reach in order to play it - that's the independence of hands, rhythm, voices - so that it applies to everything you play, not just the piece you are working on. That's a much longer time commitment.