Greetings, dry cough alone can be due to allergic, need to ask more history and starting dry cough syrup with out proper history is dangerous so kindly book a consultation so that I can guide you through the treatment

Dry cough and sneezing Is usually allergy. It is better not to give anything for occasional cough and sneezing. All cough syrups whether for dry or wet are little sedative and tend to make babies sleepy and this decrease feeding. So if you can please try to avoid dust exposure, avoid going out and keep the children's room clean and dust free