5 month old suddenly not sleeping? Leap 5?

S

She usually sleeps 630 to 430 is up for a feed at 430. Then back down till 6. Last night up at 9, 12:30, 4:30. Its now 5 and she is still awake. My womder years app says she is in leap 5 but it doesn't seem right it goes on to say leap 5 is 26 weeks. My little one is 23 weeks from her due date so I'm confused. Although it feels like a leap I don't know.