I think we are making this much harder than it needs to be. We release oxytocin when we hold, touch and cuddle each other, and when we orgasm. But interestingly those who freak out new mothers with the supposed "risks of breastfeeding" rarely warn of the dire risks of sex. (yes, because like breastfeeding they are non existent) You don't need to *do anything/take anything*) And like many of us who breastfed through pregnancy and beyond you might find it such an amazingly blessing to be able to get a tired toddler to sleep in 5 sucks when you are pregnant and over it, and you may marvel at the wonderful bond it creates between your breastfeeding children, and how your body provides for you all.
Breastfeeding is NOT risky business!