My son is 11 weeks old and has not pooped in 3 days. I have given him gas medicine the first day (thinking his discomfort was from gas), moving his legs in multiple movements, a suppository, and a teaspoon of Karo syrup in his milk. He is on formula, and has been on the same kind since he was born. His eating habits have slowed since the second day but is still taking in enough fluids to not alert the doctor. Any ideas on how to encourage his bowls to get going?