https://aescripts.com/keytweak/
KeyTweak! This free Ae script is so powerful, but probably under the radar of many Ae users, since I created it already 10 years ago. Its super helpful if you need to adjust properties with lots of keyframes. Get it at https://aescripts.com/keytweak/

in depth version of this tutorial: https://mamoworld.com/tutorials/how-modify-lots-keyframes-once-keytweak-after-effects