Personally I do not think it is a good idea to have fillers put in while one is recovering from any surgical procedure.
Adding something new to something that already has had invasive surgery, it just adding more fuel to the fire and may lead to results you may not expect or want.
However, whether it be steroids, fillers, or additional procedures, that is a personal decision to be made by yourself including the risks and consequences that come with that decision.
I agree with
@Swanky . The preferred way is to go back for a follow-up with the surgeon who did your procedure but since it was done in South Korea, that is difficult.
Best is to go see another plastic surgeon for a consult and ask about your options. Make sure that plastic surgeon is currently board certified and preferably specializes in chin surgeries,
especially in chin or facial reconstruction procedures and/or revision procedures.
(there are some plastics who are great at their specific niche [ie. rhinoplasty, breast augmentation, etc.],
but a revision or additional surgery on top of one that has already been performed takes a little more special skill and experience.)
Adding on my 2 cents:
I also agree that 2 months is too short, genioplasty is quite an invasive surgery (especially when compared to less invasive options like chin implants or using only fillers in the chin.)
There are certain types of surgeries in which a revision is better until full recovery or better done during the recovery process. It really will depend on what the consulting surgeon thinks of the results of your current procedure and potential outcome/prognosis.
Good luck, I wish the best possible outcome for you in whatever decision you make!
Disclaimer:
These are just my thoughts and personal opinions. This is just based on my personal experience working with plastic surgeons and general surgeons. I am not your primary care physician nor your surgeon. I have no knowledge of your personal medical history or surgical procedures. Please do not take this a serious medical advise or as some kind of medical recommendation but as honest thoughts from a person on the internet. I am not liable for any decisions that you make for yourself.