 [ Symptoms ] been having headaches nausea sore boobs nipples getting darker and feel bloated even if i do not eat am i pregnant [ Disease ] they typical time that babies are switched from formula to milk is around age 12 months so you are a bit early since babies actually need some fat in their diet the change is usually to whole milk not skim or 1 at first with the pediatrician is okay and assuming your child is eating well fromt he table you can make those changes but remember that milk and formula are not equivalent