MaxMcAllister in his suspension clinic (can be found on YouTube) provides the info that all geometry changes have a side effect for every intended effect. He said it’s about 3:1 ratio of effect to side effect and many people chase setup issues because of missing information of knowing which end of the motorcycle to change.
The cliff notes: he provides that front end changes effect corner entry to mid turn and rear end height changes effect mid turn to corner exit; being mindful of the side effect issue.
My concern with prescribing a geometry change at this point is introducing another variable into the equation when rider input, vision, timing and throttle control haven’t been sorted, nor do we know if static sag and chassis balance have been baselined.
My $.03 is aligned with the OP and Hotfoot’s process to establish what the rider is doing and how the bike is responding.