What are the risks/challenges of performing revision jaw surgery after 4 years?

For the past 4 years I have been living with poor results from double jaw surgery + chin augmentation. Almost everything that could’ve gone wrong went wrong - serious cant, midline off, tilted to the left, chin is uneven, bumpy jawline, deviated septum, and permanent nerve damage. It’s been 4 years post-op and I’m wondering what the risks are of having revision surgery and if there are any increases risks in waiting 4 years?