My 2 month old has problem sleeping. And only sleeps for max 2 hours. Loves to be carried and when I put him down while he's asleep, he will cry and appears unsettled. He used to be able to sleep through noise but now his sensitive to it. His eye lids are constantly jittery, half close and pupils rolled up while trying to sleep. Why is this so? Could it be due to his brain wave activities? What can I do?