You will want to dilute the oregano oil with olive oil at a ratio of 1:10 for a normal usage and 1:3 ratio for high intensity usage. Using it without dilution is not recommended except with skill and in exceptional situations (like death threatening unless you don't use it). Example dilution of 1:10 means 1 part (i.e. 1 drop or 1 tsp) oregano oil combined with 10 parts (i.e. 10 drops or 10 tsp) of olive oil. I usually place this in a 1oz or 2oz bottle with a reducer to be able to dose with drops later. You could use a dropper bottle, but oregano oil is so strong that it causes the rubber to corrode in about a year or two and will likely need to be replaced.

Normal dosing is under the tongue and is 1 - 10 drops of the diluted oil. Usually I do 3 - 5 drops 2x-3x per day for a cold. You can also apply topically (like under your nose). Be careful about sensitive area like under the eyes and other sensitive area of the body as that can temporarily irritate. A good book on the subject is the Cure is in the Cupboard. The author talks about all sorts of doses and uses for oregano oil and oregano herb. The equivalent formula for his Regular Oreganol is the 1:10 ratio. The extra strength is the 1:3.

Additionally I would try slicing onion, grating fresh horseradish and chewing a bit to open the sinuses. Then with the sinuses open use a snuff of garlic powder, goldenseal powder, and cayenne powder to get the sinuses to drain better. I recognize that this is not preferred by some, but it works for those with the determination to do it.

I hope this helps.

Ligure