For inline skating I bought some ankle sleeves made by Powerslide. Not ideal, but they might help.
https://powerslide.com/products/footie-high-2mm
There are of course other brands.
I rebaked my right skate today, and use a pair of ratchet clamps and a piece of wood each side of the skate, to tighten the ankle a bit. I placed a towel between the skate and the wood to even out the pressure. I don’t think Bauer skate shells are thermoformable, just the foams, but you might try this, assuming it is okay to rebake the skates.
Alternatively, True skates are very thermoformable, CCM are said to be thermoformable but I’ve never owned any.