At this age,stop breastfeeding and bottle feeds if given and give just 2 top milk feeds using a glass and 4 solid meals a day including curds and bananas in the diet in addition to whatever you prepare at home. If mild, avoid unnecessary meds and just give steam inhalations for cold and cough and decongestant nasal drops for nasal blockade or increased cough on lying down. If not improving OR accompanied by other symptoms like wheezing or breathlessness and dullness or refusal to feed, consult your paediatrician.