The beat the song is built on is a 2-bar phrase, played through bars 2, 4 and 6, and 6 more places -- 39.8% of every bar the kit plays. Learn that one and most of the song is already under your hands.
It is played on ride, hi-hat, snare, kick and hi-hat foot, counted in thirty-second notes. On its own it scores 78 out of 100 -- demanding -- and the thing that decides that is how much of it falls off the beat.
The whole song is 91 out of 100, so the beat is not the hard part: what costs you is everything around it, the joins and the fills.
A part this hard is not learned by playing it slowly and hoping. The room opens it on its simplest reduction -- the timekeeper alone, at 40 BPM -- and adds the notes back over 5 rungs, each with a tempo to reach and a gate to pass before the next.
Tempo goes 40, 47, 55, 63 and 71 BPM, and the gate at each one is 8 loops in a row with no wrong note and no wobble in the time.
PRACTISE THIS BEAT →A 2-bar phrase on ride, hi-hat, snare, kick and hi-hat foot, in 4/4 at 71 BPM, counted in thirty-second notes. It is written out above, and it covers 39.8% of the bars the kit plays.
Bars 2, 4, 6 and 8, and 5 more places.
78 out of 100 on its own -- demanding. The song as a whole is 91 out of 100. Hard, and what makes it hard is how much of it falls off the beat.