He needs to get his head on straight regarding how he feels about whether or not to observe that or any other Jewish custom. If it’s important enough to you, then keep the custom. If it isn’t, then don’t keep it, and jettison the guilt.
Whichever mummified organs are still attached to his anatomy (didn’t they remove a lot of organs from the body and store them separately?) wouldn’t be subject to the diseases that can afflict a living body. My guess is that his medication list is about to be winnowed down substantially.
Agnes’ creativity knows no bounds.