First, figure out the CAUSE to your allergies!
For instance, you mentioned that you are allergic to mites and dust.
does your bedroom have carpet?
Is your mattress old?
do you have mold in your house?
I am no doc. however I did suffer from everything you mentioned.
Same thing is with Asthma.
Asthma is a chronic condition, however you can control it.
you must figure out what is causing the attacks.
(Sometimes shedding a few pounds helps to)
B”H my allergies and asthma are fully in control.
Every situation is unique, however in my opinion, first try to figure out what is causing the reaction.