I guess maybe they were serially varied, as food is gathered or harvested in season, rather than simultaneously varied though? So you might eat a wide variety

I guess maybe they were serially varied, as food is gathered or harvested in season, rather than simultaneously varied though? So you might eat a wide variety of things during the year, but for weeks at a time you might be eating lots of just the few things that are currently available Not saying that is the case, I don't know, but I would not totally dismiss OP idea out of hand