How to run better with asthma?

i have asthma, ive had it since i was a kid. i have inhalers, and take meds for it, but it affects my athletic performance. i go to my doc a few times a year for it, but how can i run and not get out of breath quickly, i can run for about 5 min non-stop but then i have to slow down to breath. its annoying. ik there are lots of athletes with asthma. any tips on how to build endurance even with asthma causing me to have rlly heavy breathing?