My 6 weeks baby has the same . I make sure I decongest his nose frequently so he doesn't get scared and uncomfortable. You can use a decongestant. I did for my first two. But I'm amazed that I can now draw it out with my mouth. Trust me. Its the quickest for relief. I use metholatum to keep him warm. Add sweater to his vest. I take hot tea and lime. I don't want to give him drug yet so he is building his own immunity. Try it. She will sleep well. Sleep on belly.