My DS is 6.5 months and is in the midst of his first big cold. Sniffles started a week ago. No temperature, just lots of gunge. I'm doing the saline drops, humidifier, tilted matress, and I'll occasionally try to aspirate when the gunge is obvious in his nose but he's still pretty congested. Is there anything else I can do to help him get rid of the gunge? He gets super frustrated whilst trying to eat. Otherwise he's fine and in fact just mastered the fine art of rolling over.