They say it is impossible for such young babies to develop enviromental allergies. I personally do not agree.
My oldest son (now 3) was like that from a couple weeks old. He still has allergies now. His eyes water a lot, sneeze, congested, etc.
One other thing that can cause all those symptoms though is an allergy to a food. Do you nurse or formula?
A lot of little ones that have an allergy or intolerance to milk, have those exact same symptoms. It is the bodies way of fighting off the toxin (the milk).
Let me know about formula or BF. If formula, what kind you are on. If BF, do you eat dairy?
Sometimes when your lo has a cold or a lot of mucus, removing dairy can help.
Other than that, you can only really do saline drops, run really hot showers and let them breath in the steam, and run a cool mist humidifier in their room.
Oh also, try elevating the matress. You can put pillows under it and the pillows under the sheet at his feet to prevent him from sliding down. This will keep his head up and help with that.
Hugs to you, Wendy