Hi my daughter is 3 months old and weights about 13 pounds. she's keeps getting constipated and the doctor suggested miralax (polyethylene glycol). what dosage do i give?

Constipation : Is your little one drinking formula or breast milk? Infants fed breast milk sometimes go many days without a bowel movement. If stools are not firm and there is no significant straining, it is usually safe to watch & wait up to one week. I am not aware of recommended dosage guidelines for Miralax (polyethylene glycol) in a young infant. Other options: prune or pear juice, mineral oil or glycerin suppositories.