“I’ll also add my usual R. Falk disclaimer that that book is not accepted as Halacha by most of the male “Yeshivish” Olam (as opposed to the sems) or Charaidim in EY, and certainly not by the chassidim (all of which have their own mesorah). Ask your own LOR for actual practice. “
Everythng Rav Falk says is 100% HALACHAH! He gives youthe sources for everything he says.