difficulty producing

I did not produce enough for my first baby, he lost so much weight we were doing daily doctors visits until I balled my eyes out and decided I was going to exclusively formula feed. I am pregnant again and I'm wanting to try again to breastfeed are there any supplements that I can use to boost production? I know that people, like myself, with tubular breast deformity already have a difficult time but it is possible. please help I'm open to suggestions