Hello girls) Share your experience please My breasts are bothering m…

Hello girls) Share your experience please My breasts are bothering me on breastfeeding ? They're starting to sag? Do you do any exercises? Or anything to keep the shape? Before pregnancy we were neat and tidy, but now? I wear a bra 24/7 even when I sleep, but that doesn't help my situation I'm planning to wrap up breastfeeding closer to autumn or winter.