I've posted on here before with our difficulty in getting DS to take a bottle or sippy. Or anything other than a boob really.
Yesterday morning he got his 4 month shots. He was ok for a little while. A couple hours later he was completely inconsolable. He would not even nurse.
After a call to the pedi, was ok'd to give him Tylenol, and the dosage. That helped, and an hour later he still refused to nurse. But he took 3.5-4oz from the avent sippy.
A couple hours later he did nurse agai, but he went about 5 or 6 hours without nursing. That was pretty unusual.
Hopefully he'll take the sippy again today when I have to be out