can a 3 week old sleep on her side?

Dee • 31, SAHM🤷🏻, Bibliophile📖, Foodie🍕🍔🍟, Sitcomholic🤣, Potterhead☇
Hello! My baby girl is 3 weeks old and though she can't turn to the side by herself, she tends to prefer sleeping or napping sideways... if I try laying her flat on her back she feels uncomfortable and hardly sleeps.. it's been like this since a week.. is this normal? Is it safe? Is Anyone else's baby like this? Please advice...