My 4month old baby is havin cold n cough since last 10days.i hqv consulted with dr n he has prescribed advent,maxtra,nd nasoclear, viscodyne LS.takin those has cured.but i hqv noticd sinc 2days he sneezes, n i hav given him maxtra,n nassoclear. What shal i do as now it is not decreasiin.and he is salivattiing.