Hi my 1 and a half year old son has a dry and persistent cough, he can t sleep well and it s to the point where his head hurts due to coughing, I ve given him Motrin, cherry cough syrup and honey, I have put a mixture of cedar wood and RC essential oils and also massaged vapor rub to the soles of his feet, added raw onions and put socks on him and the couch won t let up..he s had it for 2 nights and 1 day now What else can I do?