Three CFAR tools come to mind that reduce this somewhat:

First is the practice of "delegating to specific future selves." You plan a specific time ("two weeks from now, Sunday, in the morning") to do a specific task ("look through my workshop notes to figure out what things I want to focus on, and again delegate those things to specific future selves"), and they explicitly suggest using this on the seminar materials and notes.

Second is the various alumni connection mechanisms- a few people have done set up groups to go through the materials again, there's people that chat regularly on Skype, and so on.

Third is the rationality dojo in the CFAR office (so only applicable for the local / visiting alums) that meets weekly, I believe.