Not going to try to pretend I know a damn thing about baseball swings, but there was a good Fegan piece on AV's off-season work to shorten his hand load.
https://theathletic.com/3240226/2022/04/10/white-soxs-swiss-army-knife-andrew-vaughn-is-showing-off-his-offseason-work-at-any-position-available/