Breast feeding question

My son is 3 months old and we had a rough birth that ended in an emergency c section because his heart rate kept dropping. He was transverse in my belly and very very stuck. He was super bruised and was bruised in his mouth which made it hard for him to eat in the hospital. I had a terrible experience at this hospital and nobody really helped me try and breast feed so we gave him formula which he's been on since birth. I'd really like to breast feed him though. Is it too late? I leak a little bit here and there when he cries. Is there any way to make me start producing milk? Any advice would be helpful!