hi my little girl was sleeping quite well til she reached 4.5month when she was waking just once in night for a feed around 3/4am. She is now waking up at 2am and then early morning around 5am for feeds, she seems to be hungry. I give her a late evening feed when she stirs anywhere between 10-11pm. but she still wakes up at 2am...what am i doing wrong? I am exclusively breastfeeding, should I try giving her a formula bottle at bedtime or should i first start weaning her and see if that makes a difference?