Define what has stopped improving
No new top PP score does not necessarily mean that nothing improved. Compare completion rate, section accuracy and repeated errors on familiar demands. Conversely, one personal best does not establish that your typical play improved. Choose a recent review period and keep the map and settings comparable; a year's worth of very different plays can obscure the problem you have now.
Look for a repeated bottleneck
Review a small sample of recent replays across several maps. Group observations, not speculative causes: inputs before arrival, losing rhythm after a burst, or leaving slider exits early. Record how often each demand occurred. A rare dramatic miss should not automatically outrank a smaller mistake present throughout most of your plays.
Practice: run one experiment
Suggested exercise: write a prediction before changing your practice. For example: practising burst entries at a manageable rate should reduce first-note errors on two check maps. Keep your usual setup fixed, collect a baseline and practise in a short planned block. Test the check maps again before rehearsing them. Changing your grip, skin, rate and map pool together makes the result difficult to interpret.
Decide what to keep next session
Keep an exercise when its intended observation improves repeatedly and transfers beyond the rehearsed pattern. Modify it when a different error becomes the limit. Drop it when repeated checks show no relevant change, rather than assuming more repetitions must work. Treat this as a practical review method, not a guaranteed schedule for rank gains. Preserve notes on unsuccessful experiments so you do not unknowingly repeat them.
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