I have similar experience (i had 2 days only sleep 4 hours) ... at last I discover my BB is sick (have running nose and cought) so, she feel uncomfortable and the drinking milk and sleep pattern is changed.
If your BB have 鼻塞, U try to make BB head a bit higher as BB sleep,
and as BB is fear (發惡夢, 驚驚咁) , U carry BB and put your hand on BB breast. sing a song to BB
and check the temperature is ok or not , sometime BB is going to being sick but BB do not know how to tell us, so BB had so much change,,,,, dont worry , and ask your maid help as U are tired ...