Thank you for your query.
I can understand your concern.
Get some blood tests done along with a chest X ray
if your baby is really coughing for such a long period.
Otherwise judicial use of nasal drops and ambroxol
drops should do the job.
Breast milk has no relation to the disease.It is protective.
Breast milk is stable at room temperature for 6-8 hrs and if refrigerated it is stable for 24 hrs.
stored milk should be warmed at room temperature and NEVER be BOILED OR HEATED.
Your diet has no effect on your child's health.
Consult your doctor if the problem persists.
If you have any further queries you are free to consult me.
Hope this answers your query.
Wishing a speedy recovery.
Have a nice day.