Casey, basically what most of us refer to as "acclimating" is the process of moving your tree from the environment it's in (inside) to a more acceptable environment. We want to do this with as little shock to the tree as possible.
In your case you want to get it out of approx. 70Ã‚Â°F and out into the colder temperatures, outside that you are experiencing currently.
For the sake of the tree, although it can easily handle those 32Ã‚Â°F and below temps. in the normal course of events, it's become used to the temperatures in the house and must be adapted/acclimated slowly.
I would suggest that if you have a cold/unheated room in your house or access to one at work or elsewhere, that's where your tree needs to go ASAP for it's own good. It will then begin to slow down and rest as it should have in the fall outside.
You want to give it cooler and cooler temperatures until you can move it outside..........with the least amount of shock to it as possible. It is an evergreen so wherever you put it, it should have as bright a window location as possible. I know that this is a tall order but it's the only thing that will keep your tree from dying between now and Spring, IMO.
Once you move it to a cooler and then colder location it's need for moisture will become less and it will need watering very infrequently.....just barely moist soil.
From that location (2 weeks would probably do the trick) you can move it to an outdoor shed or garage, again with a window for light, where you could probably leave it until the weather improves towards Spring.
Once Summer comes and goes, as Marsman (he's very kind isn't he!!
says you can leave it out where it will get the slowly progressing colder temps. of Fall into Winter. Then you will have a happy tree!!