Thank you for the additional information.
It is common for oral prednisone to take a day or two to start getting control of an asthma exacerbation. When someone has a bad asthma exacerbation that requires more urgent response, we would usually consider the use of an injectable steroid.
There are several other options of treatment that can be used by your doctor, but there is unfortunately only a limited number of interventions
that can be tried at home.
The nebulized albuterol is a good medicine for immediate relief of shortness of breath. It also would be fine to take an over the counter antihistamine
/decongestant, but this usually does not provide much relief for asthma unless there is a strong allergy component.
However, if someone is having severe shortness of breath despite nebulized albuterol, it would usually be better to be seen in the emergency room. If the shortness of breath is more moderate, then giving the prednisone some time would be reasonable. Since you are saying that the shortness of breath is not bad, then it would be OK to give the predisone some more time, but if the shortness of breath gets bad, then it would be better to be seen in the ER.
If I can provide any clarification or additional information, please let me know.