It is not recommended to give high-protein biscuits to a five-month-old baby. At this stage, your baby?s digestive system and kidneys are still developing and are not ready for complex solid foods or protein supplements. For the first six months, babies should ideally receive only breast milk or infant formula, which provides all the necessary nutrients. Introducing solid foods too early can strain their digestion and pose a choking hazard. Once your baby reaches six months, you can gradually introduce soft, single-ingredient purees. Please consult your pediatrician before starting any new foods or supplements.