Breast milk is generally the best source of nutrition for newborn babies, including premature infants. It provides numerous health benefits and is specifically tailored to meet the nutritional needs of infants. Breast milk is easily digestible and contains essential nutrients, antibodies, and growth factors that support healthy development. Every baby is unique, and the specific feeding approach will depend on the individual circumstances. Your healthcare provider will be able to provide personalized advice and support based on your baby's needs. https://thebabiespace.com/newborn-sleep-without-feeding/
Not all babies are chonky, even full term babies. It depends on genetics as well. Bf solely is fine and babies will grow but if you feel maybe mummy’s supply is insufficient, can do mixed feeding. Have you checked with PD regarding this?
I think doesn’t matter breastmilk or formula, it’s whether they’re drinking to their fullest every feed 😂
HarrY