Breast Reconstruction via Public Health System

Welcome @Sweets. I don't know about specific BMI requirements of the public hospital system,  however my breast surgeon referred me to a reconstruction plastic surgeon who is willing to do private or public surgery.  They would be able to advise better than the hospital if you need to lose weight. Going on a waiting list would give you a timeframe as well as incentive if you need to lose weight. Everyone is different. Just a thought. Hope it helps. Good luck with your ongoing treatment