When it is getting overwhelming for me, I take one day at a time and plan to make one easy or quick thing and one that takes more time. with an easy schedule , it takes pressure off and if i get done with the planned things and still have time, I at least start something.
When I used to bake hundreds of cookies at Christmas, I would mix up all the dry ing. for all my recipes, put them into containers, list the name,and other ing. needed and where the recipe was. When ever I had some time, I would make it. It takes less time just adding the wet ing, shaping and baking.
If you get short on time, only you know what you were making, so you can always decide to hold off on something until next year. This is a time of year when EVERYONE should enjoy themselves. If you stress yourself out, you won't enjoy the season as much and as a result those you love won't either.
Relax, and have a Merry Christmas!!
Monica