After three C-sections, abdominal fullness can come from diastasis, loose skin, scar tethering, or a combination. If there is true muscle separation, exercise can improve core strength but usually cannot fully close the separation once the fascia is stretched. A full tummy tuck is usually the most complete option because it can repair diastasis from the upper abdomen to the lower abdomen, remove lower abdominal skin, and improve the C-section scar area. It also allows the belly button to be repositioned. A mini tummy tuck is more limited. It mainly treats lower abdominal skin and sometimes lower muscle laxity, but it usually does not adequately address upper abdominal diastasis or upper skin laxity. If your concern is mostly upper skin laxity and muscle separation, non-surgical tightening treatments may give only mild improvement. They cannot replace muscle repair or remove true excess skin. My advice would be to get an exam focused on the amount and location of diastasis, skin laxity above and below the belly button, and the C-section scar. If you are already planning breast revision, ask your surgeon whether combining it with a tummy tuck is safe for your operative time and recovery, or whether staging the procedures would be wiser.