We have recently moved to nigeria My 1year old son

Patient: We have recently moved to nigeria. My 1year old son has suddenly started wheezing 1 month after arriving. the doctors have given him a ventoline. He has been using this daily for a week now 3 times a day yet the wheezing continues. He has no temperature and acts completely normal. The doctors here are not really helpful with regards to finding the triggers And giving advice on monitoring. Should i be concernedm is there anything specific i should look out for. We are flying back tot he Uk in 3 weeks he will have to hold out till then we will be able to see a proper doctor and alergy test. Please advise me in the meantime. Many thanks Best Wishes