I have good and bad news for you. And they’re the same piece of news - no matter what you do, the healing process will take the same time. You can’t really speed it up, but treating the symptoms as they appear won’t make it go slower either.
So while the cold is going on, focus mostly on your comfort and well-being. Based on what you said in the OP and across the thread (“I noticed my symptoms gradually start about 3 days ago”, “I am going on holiday in 3 days”), you’ll probably be fine for the holidays.
[Off-topic: you probably selected “bot account” in the settings, didn’t you? You’re being marked as a bot by Lemmy.]