Ugh, I'm sorry you're having such a rough go of it. I didn't try pumping exclusively with any of mine, but it really seems to be a bit of a mixed bag in terms of results. The one good friend I had who tried it, had to stop at about 6 months because her supply just gave out (not suddenly, it just kept decreasing). I don't know how feasible it is to be able to do it and not have to supplement - but at the same time, it seems like there are people out there who do manage it for extended periods of time so I think it is possible. Did you ever have supply issues with the others (if you did BF them, I think you did, but can't be sure).