Hey -
It looks like you are getting some great advice. My son got RSV at 4 months and continued to be seriously ill (with breathing problems for years). At 10 months, it continued to be severe and so they did allergy testing by doing the sticks of the key things kids are allergic to down his back. They stick them with the key thing and then wait about 20 minutes to see if their skin reacts. It is a VERY easy test. Fortunately for us, my son was not allergic to anything. However, he continued to have breathing problems. Around that age (10 months), we were referred to the pulmonary specialist. The pulmonary specialist told me that allergies, eczema and asthma are all on the same gene (my son also has skin problems). Anyway, he was on albuteral and pulmicort for a very long time. They were both a liquid given to him in the nebulizer. WHen his breathing is very severe, the albuterol has to be given to him every 4 hours. So, this may be why your son appeared worse in the morning, he had not had a dose in a long time. Further, your son's breathing my have appeared worse immediately after a treatment because mucous was loosened in his lungs and so he may have sounded more rattled (just a theory from me - not really based on anything). When I give my son a breathing treatment, I don't notice a perceptible difference in his breathing for probably an hour. Anyway, the pulmicort is a steriod that also helps them - when my son was on it, he just took it morning and night (with the nebulizer).
For the first 3 years of my son's life, he was constantly on the nebulizer. He is now almost 6 and only has to be on it once or twice a year. He is using it right now and I think it is because of allergies (pollen). He developed a dry cough that they call an asthmatic cough and the nebulizer helps with that.
Also just FYI, when my son was seeing the specialist and embroiled in all of this, they told me that they could not officially diagnose asthma until the child is 4 or 5 and they can do an official lung capacity test. But, the child has to be old enough to listen to and follow instructions (breathe in a deep breath, hold, release, etc.). Since my son started getting better after age 3, he has never been "officially" called asthmatic. However, they totally treat him like he is asthmatic and have NO problems giving me the albuterol for him. This week when I called the pediatricians office and told them that he had the dry cough, they wrote the prescription and sent a note to the school so that the school would do the breathing treatments. However, they wanted to see him if he did not improve after 2 days of treatments (he did improve).
Anyway, trust me, I KNOW how stressful it is. But apparently, the breathing issues are fairly common and your pediatrician should be able to help you. However, if the issues continue, request to see the pulmonologist. I don't know how it is here in the Dallas area, but it took months for us to get a pediatric pulmonary specialist appointment back in Virginia. So, if you feel you need to go that route, start looking into it. But, the nebulizer should really help. I too am unclear on what you mean by "syrup", so if you are not using a nebulizer, ask your doctor about getting one.
-L.