My baby (13 days old) had been taking breastmilk and formula milk. My husband had accidentally been giving baby under diluted formula milk for about a week. He would put the powder in the bottle before pouring in water. I only found out recently and had changed the way formula milk was mixed. While baby's poo and pee appeared to be normal (poo about 2 times per day, urinate about 10 times a day), I am worried whether there is any impact on baby's health??