judysBB,
Some breastfed babies do have the bowel movement everyday but some have once 1 week, or once every 3 days, however, they are normal provided that babies' crap are soft, and they do not have any difficulties in crapping.
if baby has the bowel movement once every 5 days,
means he has absorbed all of the breastmilks, so don't worry and no need to give 便利通 babies.