Thanks for your query.
in your baby is viral in nature and will take few days to subside.
I suggest you to continue with tylenol
every 6 hourly if fever shoots above 100F.
Give plenty of fluids,fruit juices.simple bland diet so as to maintain hydration and nutrition.
He should take complete rest.
In case symptoms persist get him evaluated again by your doctor.
Wishing your baby good health.