Sleep pattern

FTM here... My baby is just over 2 weeks old and still has her days and nights mixed up... she sleeps the majority of the day but has trouble falling and staying asleep at night. How many weeks old was your baby once she finally figured out to sleep at night and stay up during the day aside from a typical nap? Any tips for helping her figure it out? I swear she eats and falls asleep no problem during the day but won't stay asleep for more than an hour at night!