My 4 month old previously would have 5+ bms a day and this week this has been dramatically decreased to one or less a day. when should i call the dr?

See Below: As long as the bowel movements are normal, there is nothing to worry about. As children get older, the frequency of their bowel movements will decrease.

Depends: Breast fed babies can go a smudge every feed or one cradle filler once a week.Bottle babies usually go 2-3 times a day. Kids often change their pattern if you change their feed, like adding cereal (slows it ).As long as the stools are soft there is no reason to freak out.