This is a summary of fasting at this point that my pastor, Fr. Aidan of St John the Forerunner in Cedar Park TX provided in his weekly newsletter:
"We're mid-way through the first week of the Nativity Fast. This fasting season is divided into two periods: The 1st period runs through December 19th when the traditional fasting discipline (no meat, poultry, eggs, dairy, fish, wine and oil) is observed on Monday, Wednesday and Friday, but with katalysis for wine and oil on Tuesday and Thursday (some jurisdictions also permit fish on Tuesday and Thursday during this 1st period) and for fish, wine and oil on Saturday and Sunday. The 2nd period is December 20th through the 24th (the period of the Forefeast) when the traditional fasting discipline (no meat, poultry, eggs, dairy, fish, wine and oil) is observed Monday through Friday, but with katalysis for wine and oil on Saturday and Sunday. If you need to make any special arrangements for the fast involving exceptions for diet or for the Thanksgiving Holiday, please speak with your spiritual father as soon as possible, so you and those that you love don't miss out on any of the blessings of this special discipline."