Night sleep

BB
My baby is almost 12 weeks old and our night looks something like this. Four hour stretch, 2 1/2 hour stretch, 1 1/2 hour stretch, 1 1/2 hour stretch. And I mean from feed to feed which means I am getting a lot less sleep than that. By day I nurse her approx every 2 1/2 hours. Is there anything I can do to help her sleep longer at night or should I just go with the flow?