Dear,
it is a very strict vrat i have heard ...even i wanted to do it but just bcoz one has to do udyapan with some small boys who r not supposed to take any sour thing that enitre day.this made ,me a lil bit uncomfortable so i did not do the vrat....
but since u have done it now u try to get small boys from ur relations n friends who understand the mahima...........rest i am sorry this is all i know.but do it with determination baba will help u!