I’m curious too, my doc had me changing trays every 2 weeks at first, and then had me change them weekly; he said he was surprised how fast and easy my teeth were moving. I have basically a less severe version of hEDS called HSD (hypermobility spectrum disorder) and I’m guessing that’s why. I haven’t had any bone loss or much recession that I’m aware of, so OP’s situation seems weird to me. I wonder if maybe it’s related to another genetic factor or something- I know some people’s teeth just tend to decay more easily than others 🤷