My baby gir will turn 6 mnths tomorrow... Since last 4 days, she has become very fussy during sleeps.. Cries when we put her to sleep.. Keep chewing a lot and in the midnights she either cries a lot or becomes extremely active,doesn't take enough feeds well,sleeps at 2 or 3in the night.. But she is active and plays well..Please help.. How long does this last.. Couldn't sleep at all since last week..