I self-studied the entire book and did all the problems around the beginning of Covid.
The biggest roadblock I found was the "picture language" problems in chapter 2 didn't have an obvious implementation of "painters" in MIT scheme. There was some libraries I found in 25-year old 6.001 course webpages, but they were not functional.
Fortunately, there was a recent Racket library that was specifically designed for that chapter of SICP.