What can I do about severe bone erosion under my chin implant 5/6mm? (Photos)

I recently had a revision chin implant performed. When my PS removed the implant, he found a large amount of bone resorption - 5/6 mm. The 1st implant was placed too high & he had to fill the deformity behind it with the new implant. I am so worried about my lack of options. I can remove this implant and then have a recessed chin as well as a large deformity from bone erosion. Or, I can keep this implant in, that looks "off" and risk more bone erosion.  What needs to be done so it can be placed properly & what caused so much bone resorption? Any advice on my options is appreciated.