Really want to try and treat this naturally and see if there is a difference. What can you do for a runny and or stopped up nose, especially at night, other than a dehumidifer or or whatever that thing is called? Any herbs I can try?
When ds is sick, we add eucalyptus essential oil to steam in his room. It REALLY reduces nighttime congestion. Our dr is a homeopath and he highly recommends pulsatilla for children's colds. I tried it with ds's last cold and he did recover sooner than is typical.
I second eucalyptus eo in steam. You could also add a drop or two to a really hot bath. leave the doors/windows closed for 1/2 an hour then take your son in and reshut the door, let him breathe in the steam. Peppermint is also good. You can make a peppermint tea. the steam from it will help plus the warm and yumminess of peppermint.