Density diff looks too detached from the Hard diff and too close with the insane diff where sometimes it looks quite higher considering circle usage. Talking about 00:02:949 (3,4,5,6,7) - 00:13:817 (5,6,7,8,9) - these patterns are super strong, even stornger than insane as you can look at, you really need to calm your patterns. I'm gonna point out something
00:02:949 (3,4,5,6,7) - 00:13:817 (5,6,7,8,9) - as said, comparing with Hard and Insane, these streams looks denser from the all diffs mentioned, these need to be nerfed a little. you could just make the first 2 circle in another 1/4 slider so it will remain the triple as dense pattern
00:04:874 (4,5,6,7) - this stream, considering the song, is quite too strong if we look at how middle diffs mapped it. You may make another 1/4 slider on 00:04:874 or remove the note 00:04:987 (5) -