I think those extra soybeans could be used to make rolled soy flakes. They are like oats, but contain a lot of protein and some fats, and can be combined with oats to form a complete meal (if a multivitamin and salt is also added).

It seems to me that soy flakes are currently very underrated and there's quite an opportunity to market them as a supplement to breakfast cereals, as an ingredient for protein-rich "muesli" and even as part of a non-ultra-processed full meal replacement.