It takes about 3 months for the baby to adjust. Same thing with my baby, she's 2 months now and refuses to sleep early. At one point she was sleeping at only 5 a.m, then gradually went to 3 a.m, now it's 1 a.m. Hoping she'll learn to doze off at 10pm or so. As for your baby crying at night, it could be colic. My baby has severe colic, she used to cry non-stop late at night, which also explains her late sleeping patern. Perhaps you would like to check into that.