Ollie is 3 years old and is brought in by his mum as he has had a cough for 6 weeks. It is impacting the whole family as it is disturbing the sleep of others as well. She is asking for an inhaler as she was given one last year and it really helped. There are no daytime symptoms. You give him a SABA inhaler (Short-acting beta agonist) for use as needed but also give ICS (inhaled corticosteroids) for twice daily use.
When you review him at 8 weeks mum reports symptoms have resolved completely. You stop the steroid inhaler and mum makes an appointment 3 weeks later. She reports the recurrence of cough and night time waking.
What is the next most appropriate step?