Till what month do newborns need to be fed every 2 to 3 hours ?

Hi Mummies, I am first time mum here and my baby is 19 days old now. Can I please check by which week the feeding and sleeping patterns start to normalise? Currently it is every 2 to 3 hours so pulling sleepless nights. Just want to understand when does it start to get better Thanks mummies for the help #advicepls #firstbaby