Greetings This urination pattern resembles normal development for a 3.5-month-old. During deep overnight sleep, a baby's body naturally slows down urine production. It is very common for infants to hold urine for 5–6 hours at night.

Consult with Pediatrician physically for further evaluation and treatment

Its normal

Yes normal

Yes, this can be normal. At 3.5 months, some babies may pass urine less frequently during nighttime sleep compared to daytime. If your baby is feeding well, active, gaining weight appropriately and passing at least 6 wet diapers in 24 hours, there is usually no reason to worry. Passing urine only twice between 8 PM and 6 AM can be normal, provided the total urine output throughout the day is adequate. However, if there is no urine for 8 hours, especially with poor feeding, dry mouth, unusual sleepiness or fever, please get your baby examined promptly. Also, there is no need to give extra water at this age. Breast milk or formula is sufficient.

At 3.5 months, 5 to 6 hours without a wet diaper overnight is usually normal. She isn't feeding during that stretch, so her body simply makes less urine then. Her frequent daytime wet diapers are actually the better sign that she's getting enough fluids.