My son completed two months today. For the past three to four days he has become very fussy while breastfeeding after 10 min of breastfeeding he starts to cry or try to sleep. However earlier he used to have good half n hour feeding. My milk flow has also increase it's like fountain now but still he is fussy. Also many times now he drinks only side so I am afraid about is he getting enough hind milk? What the problem and what should I do?