How to clear RSV?

Help! My son has RSV and has been to the doctors and hospital twice each in the last six days. It’s not as bad as it was on day 4; we are now on day 6. Any ideas on how I can help him get better? I’ve been sucking his nose out none stop. He’s eating fine still, which is good. Any idea when RSV starts to clear up? Or any tips on how to help him?