Need Bottle suggestions

I have a 4 day old and we have been using Dr brown bottle and we have the stage one nipples for them but it seems like the formula is flowing out of them too fast that my little one keeps spitting most of the formula out. Has anyone used the preemie nipples for them? if so where they any good? Also if anyone has a suggestion on a bottle that has a slow flow I would love to hear what your using.