My son will be 2 in aug. been a picky eater since his 1st bday, eats mostly crackers. chronically & painfully constipated(cries). what can i do?

Constipation: Picky eaters are really difficult, I have a couple as grandchildren. They can be that way because they have trained the adults for the most part. It takes tons of patience and persistence and some intervention from speech therapy a lot of times to help. See your Pediatrician or FP about this as well as about using Miralax (polyethylene glycol) for the constipation.