Hey mama, one day walang poop is usually okay lalo na kung mix feeding kayo, sometimes ang formula milk digestion is different from breastmilk kaya mas mabagal ang bowel movement! Pero kung umabot na to 2-3 days or kung parang uncomfortable ang LO, better check with your pedia na lang para sa peace of mind, bawat baby talaga may sariling rhythm, pero importante na sure tayo. How's your LO acting otherwise, active pa rin at masaya?