I ran into the same problem with one of my residential projects. What really helped was using https://www.genense.com/services/3d-virtual-tours/, because it let the clients literally “walk” through their future home instead of just staring at drawings. Within the first five minutes, they understood the proportions, how the light would work, and even how the rooms flowed into each other. It saved me weeks of back-and-forth revisions and made them more confident in the design.