It may be best to ask questions of your surgeon or their nursing staff. They may possibly be able to address the #identations with fat #grafting or #cosmetic #fillers if you are deemed a good fit.
Yes, fat grafting would be a good option in your case. Good luck and be safe.
John T. Nguyen, MD, FACS, FICS
Double Board Certified Plastic Surgeon
Be sure you find a plastic surgeon experienced with gynecomastia revision and one who performs a lot of structural fat grafting. A revision could give you a great result.
the depressions you have can occur and I do agree that fat injections is a good option. I certainly think that lifting weights is also OK to do but not around the time of the fat injections.