How do you scale multiple block displays at the same time?

I used Triton365's BlockState datapack to convert a build into a 1:1 scale block display replica. So all 50+ blocks are individual block display entities. I want them to be 1/10 of the size though not 1:1 scale, but when I modify their data to be 0.1 scale, they scale down relative to themselves and the blocks become separated. So how do I scale them down in a way that the blocks stick together? (without a ton of manual inputs) Or do I need to summon them in differently? Right now they are summoned in via individual command blocks in a different dimension in the same positions that summon a block display, and use the BlockState datapack to check the block state and change the block displays to right block.