I think I got the main part right, I went until 1.40 then the synth took too much for me to focus haha ^^ The chords might seem simple to you but I find this progression very interesting. I might get advanturous on key writing on the keyboard but I struggle to do so on the guitar so that is fun to learn :D
And the pacing of the arpeggiating is so moving, the debut of main motif at 0.28 to 0.31 for example (the B going to G through F/D?) is a great motion. With that G going to A minor 👌 The pause and then doubling the arpeggios makes a cool cadence. I don't know, these chords felt non-intuituve to me at first and I wondered how you proceeded :)
(an error I just noticed is that the 4-tuplet in the main part is actually an 8-tuplet or 9-tuplet... honestly I don't really know what's going on there it's just faster)