hello doctor I'm a mother of very preterm baby I gave birth in 30th week of my pregnancy now he is 5 months old. I'm giving formula milk to him. doctor suggested me to use multidec, toroferon drops Im using these both drops before feeding. now they suggested salvit-z and ferilite I don't know how to manage all these drops will please suggest me which is the best time to give these drops before feed or after feed? how much gap I have to take between the drops? at which time I have to give the drops in a they told me to give all drops mng and night also so please tell me all these questions.