im not taking any. the colostrum you produce for first couple days is all baby needs- i have even read and had confirmed by MW that even if you produce only a teaspoon of this, it is much higher concentrate than normal milk that will start flowing few days later, so they will be satisfied on the little you have.
if for any reason i cant even produce that (tho i already get little bits leaking now and again) then the hospital would provide you with stuff- just think about the ones who go into labour in emergency and have not even got hospital bag with them, the hospital have to help you so dont worry too much