Did I Make a Mistake Not Adding Dish Soap to My Mel’s Mix?

Hey everyone! This is my first time gardening, and I've just mixed up Mel's Mix for my raised garden bed. I opted not to add any dish soap to the peat moss, and I also halved the amount I used, anticipating it would expand. Now that my bed is planted, I'm a bit worried. Will the mix still hold water and expand as expected, or should I be concerned about the 33% peat moss ratio? Thanks for any advice!