Hi again Poison Apple - look up breast compresions, you can use them to stimulate another let-down, I think there is a Dr Jack Newman video on that too. That way he can contiune to feed till he is satisfied, no matter how long it takes.
BUT you really need to get some in person advice and support, from someone who is a breastfeeding specialist, not just a midwife or obstratition - some of them have extra training, but alot of them know squat, and how no matter how well meaning everyone hear is it's not the same as someone being there with you.
Also look up suplimentary nursing systems - it should be covered by kelly mom, its a way of feeding formula while still getting your milk suppy stimulated (kinda hard to descrive but tubes are involed )
You know all those pictures of Adam and Eve where they have belly button? Think about it..................... take as long as you need........................