My son is eight weeks today. For the last several days he has not been eating as he usually has. He shows no signs of hunger and when I do put him to my breast he will only suck for five minutes and then fall asleep or just pacify himself. He typically would eat and eat til he was overfull and barf up what he could not hold. He did have pink eye since Friday and developed a cold/cough/congested since then but is getting better. His diaper output has decreased but is still within the normal range. He is really fussy most of the day and was sleeping a lot until today. Is this because he was ill, is he simply becoming more efficient or is it something else? Thanks in advance!