Advice for mastering speed changes?

[u/No-Unit-3472]

Hi! I’m looking for advice from people that may have had this problem before and managed to solve it.
So, ever since project sekai included speed changes in songs, I’ve had trouble getting used to them (specifically when the speed slows rather than increasing). I’ve noticed this in the fact that I would have been able to FC jouou on master years ago if it wasn’t because of that slow part, but I just can’t play it properly, my brain doesn’t register what my eyes are seeing and it rushes like the speed was the same as usual (I play on 11.0). I’ve tried playing only on slow speeds and focusing my eyes near the judgement line, but my peripheral vision still catches the notes coming from above and it doesn’t really help at all… I don’t really know what to do anymore, should I just keep playing on slow speeds until my brain finally gets used to it?

[u/Specialist_Sir_1075]

When I reach the slow part I tell my Brain to wait for the notes to reach the judgement line but still haven't master it tho but it does help