Since the beginning of the Week LO has only been nursing for about ten mins each feeding. Prior to that he was nursing on each breast for about 10 mins. This Friday makes him 6 weeks. His been so fussy waking up all thru the night when he usually sleeps for a good 45 stretch. When he pops off the boob he doesn't cry. His done and can't be bothered. I'm guessing he may be going thru a growth spurt? Or should I be concerned further?