Hi, My daughter is 11 days old. Im just wonder...

Hi, My daughter is 11 days old. Im just wondering what other mums do. Im feeding her every three hours so at 12, 3, 6, 9, 12. Im wondering if I feed her at 9pm and wanted her last feed to be at 12 so then she has her long sleep from midnight onwards - when would you go to bed. After her 9pm feed and set an alarm for 12?? or wait until 12 and then go to sleep after her feed???? opinions would be greatly appreciated - thanks :) cady