my baby's sleeping patterns have completely changed

Crying out method it does work and you have to give it time. When doing crying out method you only do it for short periods and then slowly take longer to answer to your baby. I started it out when my daughter was 4 months old and she is 24 months old now and is sleeping throw the night normally doesn't get up at all now. She doesn't even fight when we put her to bed. Worked like a charm. When she was 17 months old she had to stay with my in laws for a month and two states away. They said she was so easy to put to bed. She might have fussed for a few minutes and then stopped and went right to bed. My son he doesn't much either and he is 5 months old and sleeps in his crib all night. Might wake up for a feeding and right back down he goes. He fallows his sister so well. He normally goes to be right when she does and is up around the same time. he does nap in the middle of the day but not for every long at all. Which is good thing it means he is more active and wants to be away in the day time. Also starting a bed time scheduled a set time and doing things to get them settled down. We do bath time every other night and some times every night which my daughter knows well means bed time after wards.

it would be better if you dont change this, because once she grow up you will remember those memories, enjoy each and every moments with her, even if she cries you will be knowing the best way to make her quiet :) god bless her

The sleeping cycle of babies really change. At times they would sleep early or late at night. I experienced too to wake up at dawn because my baby was awake already. They have different cycles. However, my baby seldom cries not if he has sickness.