what do I do when baby is fussing while drinking milk. we just upped his milk to 5oz from 4oz with a go from his pedia and he was drinking well until yesterday when he suddenly wanted to be at a certain position to drink his milk. now he just fusses whenever we give him milk. then he gets too tired from crying and would fall asleep without drinking. tried using teethers and they worked before but he fusses now even with the teether. also used frozen breast milk, used to work but not anymore. We are worried he is not drinking enough. there are white spots where first teeth usually erupt but I am not sure if they are teeth already.