M.M.
I have been told that they are too young for allergies at that age and then from another doc to try a little bit of Benadryl or Claritin. Depends on the doc. May want to get a second opinion.
My youngest is a cougher EVERY time she gets sick and it lasts for WEEKS and is always worse while she is sleeping. Vics Baby Chest rub really seems to help. I read something sometime back that said if you rub Vicks on the soles of the feet before bed and cover with socks, it really reduces the cough. Have not tried that, but I know it helps on the chest and back. Will make grease type spots on the PJ's…just a heads up.