Is Domstal And Lazol Safe To Give For A Small Baby?

My 29.6 weeks premature baby girl is four month old now. She weighs 3.6 kg now. Her birth weight was 850 gms. In her 2 months of nicu, she didn t have any vomiting issues. However after coming home in couple of weeks she started having vomiting issues. At present she is vomiting after every feed sometimes part sometimes full. She was on perinorm from almost birth. Was switched to ondem when dr thought its not working on her. However today she was shifted to domstal and lazol. Was given the dosage of 1 ml thrice. I have already given her 1 ml dosage to her and then got to know that there is domstal baby drops also available and the dosage written on it to b administered to babies is quite less. Also she was on expressed breast milk and nan1, however nan has been replaced with soy formula. My question is have I given over dosage of domstal to my baby? Is soy formula good for my baby? How long will it take medicines to show it s effect? Also lately I have seen her rubbing her nose to me quite often.. Is it related? I am also giving her Woodward gripe water 2.5 ml thrice to her. Are all the medications I m giving her are safe and for how long can I give it to her?