I have stored 911's for years at a time moving around the globe. In fact, the one I am driving now, was stored for 1-2 years (at a time -over a 5-6 year period) with no issues other than flat spots on the tires, of course - it has 200,000 miles on it and one broken head stud. I drive it almost daily. I actually started another 911 after sitting for 3-4 years and yes there was smoke, but it ran and idled fine - no leaks, compression was good, fuel tank was fine (I might have posted a thread/video here to record when I started it)...you can search for long term start up procedures if you need to.
My German mechanic, in Germany, told me not to overthink it...easier said than done for some.
So...if it's just for the winter:
Fuel stabilizer (full tank).
Clean-ish oil.
I would pull the battery out and trickle charge it in the area if possible.
Tires over inflated a bit and yes, I would roll it a few feet or so, when you can...
and...yes, the critters.
Mouse prevention, best you can. I had a thread about a mouse that got somehow in my garage, in the car, and how shocked I was. I am in south Texas and generally not an issue in this area, insanely clean garage, well, taken care of yard (and landscaping) around said garage - so, if it can happen to me, it can happen up north.
Battery and tires might not be needed to worry about, come spring you might want new of each and start your own records of maintenance. Especially if the tires and battery have older date codes.
These engines and cars are tough and I have seen these driven in the hottest deserts and the coldest climates, year around. Our neighbors in Germany had one and drove it all year around, every year we lived there for 5 years. Washed it frequently for corrosion prevention, but still drove it all the time.
It was eye opening for me.
Honestly, changed my whole attitude towards ownership
Listen to the pros here, I am just one opinion. Hopefully, with the input, you can find a happy medium and make your own checklist/process...glad to see you aren't opposed to driving in the winter...heaters on mine are like blast furnaces.
Best of luck!
Erik