HI! I feel for you. My son is now almost 8 and he was diagnosed with asthma at just over a year old. Good news is he has gotten better over the years.
We were giving him albuterol breathing treatments every four hours, some days were better than others, but you still want to give him at least two a day to make sure the air ways stay open. I do this for about three days after the last symptom.
His asthma is also mainly from allergies. At age 4 I took him in to a specialist for the scratch tests - they said it was almost everything outside along with Dust, mold and pets inside.
We found that once he was on a daily allergy med, it helped tremendously! I think also they out grow some of it as their immune system develops.
Now, we basically only need the breathing treatments when he's getting a cold or if he's been at someone's house that has pets, a lot of dust. Once it a while it will come on with no notice and we never figure out what it came from, but that's not often. When it gets really bad where the albuterol doesn't work then he goes on the oral steroid Orapred. It usually knocks it out within an hour, but it's strong so we wait to use it until we have no other choice.
Our son got a lot of ear infections and strep throat and His asthma would flair up each time. Since we've had ear tubes put in (we're on his secon set now) and his tonsils taken out - he is MUCH better and hardly every gets sick!
The best advice I can give you is #1 take him to an allergy specialist – I’ve heard that Dr. Stapleton here in Kearney is really good, but there’s others out on North Oak. See if you can get him on a daily allergy med (not sure how old he needs to be to start).
And #2 for safety, keep stocked up on all medications in your home and always take the enebulizer and albuterol with you when you’re going to be away from home for the day. When we are going to be gone overnight we also take the orapred just in case, because if a bad asthma attack comes on for our son, it can get to the point of no return in a matter of just a couple of hours without notice. We’ve been stuck out of town without the orapred before and had to go to the hospital. Getting a hold of your normal doctor to call in a prescription to an out of town pharmacy sometimes take an act of God! I was just thinking this morning how I wish we didn't have to pack the enebulizer to take on our trip next week since he hasn’t had to have a treatment in almost 3 months, but you just never know and for us it seems to flair up more often when we’re on a trip so better safe than sorry! Good luck!