While he might not completely outgrow this condition by 2 years of age, wheezing at rest is usually gone by 5 years of age, and the prognosis is good, because airflow improves as the airways grow. It is good news that his doctors diagnosed the acid reflux. Effective treatment of this would be very important to prevent any further damage to his airways. This can often be accomplished with medicine, but in some instances the prevention of reflux requires surgery. When uncontrolled, reflux can be a cause of recurrent pneumonia and asthma.
Respiratory syncytial virus (RSV) is pretty much related to age. That is, as he ages, the frequency of RSV should progressively diminish.