It is not uncommon for newborn babies to have erratic sleep patterns and increased hunger during growth spurts. At around 5 weeks old, babies may experience a growth spurt that can lead to more frequent feedings, even during the night. This behavior is generally considered normal as long as your baby is gaining weight and meeting other developmental milestones. However, if you have concerns about your baby's health or if they are not gaining weight adequately, it is always best to consult with your pediatrician. To cope with the increased nighttime feedings, try establishing a bedtime routine, creating a calm sleep environment, and ensuring that your baby is getting enough daytime feeds. Remember that every baby is different, so trust your instincts and seek professional advice when needed.