10 weeks old not peeing at night

Hi mummies. Ftm here, just wanna check is it normal baby not peeing at night? My baby is 10 weeks old, sleeps abt 4-5 hrs at night before waking up for milk. Before sleep, I'll change her diaper so she has fresh diaper. After feeding when she wakes up at night., I notice that her diaper is still dry. She'll wake up again at ard 6-7am and sometimes it still dry. Is there anything that I should be worried about? I'm scared that she is dehydrated thus not producing pee. She's on fully bf, latching on demand. Should I bring her see pd? Or is there mummies here that has the same experience with their LO. Thank you!