Sleep help!!!

My baby is 2 weeks old and has been sleeping great since we brought her home until the last two nights. She had put herself on a schedule where she would only wake up once or twice to eat and would sleep soundly her bassinet beside the bed. Unfortunately, the past two nights as soon as we lay her in the bassinet she starts crying. The only way she stops is placing her on my chest and then she falls asleep. I don't want to cosleep so I need some suggestions to get her back on a schedule.