this is a period in which body immune system is not fully developed , so most of child suffering from viral infection and they are self limiting , as far cod / mild fever
, no need to worry, it will subside with supportive medicine. try to increase immune system with proper hygiene, proper diet, and proper supplement.
infant not easily accept new food and they express vomiting
, if you are introducing new food try for several day, try semisolid food like custard jelly, Rawa kheer, biscuits in milk etc
"I WISH YOUR BABY GOOD HEALTH"