Every year the same thing. Around the last weeks of November, you get stressed out people trying to release Christmas music. You know what the deadline for radio was two weeks ago. Another thing the deadline for Spotify was last week. So you are already too late to get the music out if you release it the last weeks of November, more look to do it last week of October.Take the song you where doing and just release it next year in time.
Also, have in mind that only every ten years a Christmas song is really added on as a classic Christmas song that plays every year. The odds that your x-mas song will do something is very slim. So coming up with a good song in November and record it to give out to Christmas is really not a good idea.