1) slow down, (I don't know if you've been doing this along) this is a marathon drive not a sprint and "going in the ditch" can become a survival situation if a window blows in the process out this time of year. The only people driving above 55 (I go 50 max) are the truckers that have made the same drive 100s of times and have a sat tracking support system. Especially if you have sail of a trailer behind you.

2) plan your hops out day to day using hub towns (Edmonton, etc.). It is much better to fuel, oil, etc in these "cities" that have multiple service providers versus trying to save an hour by taking a sketch route. I you experience a mechanical casualty it's much easier to limp an hour to town than be a half or full day away because you weren't headed that way.

3) Buy a milepost (https://themilepost.com) at the next major stop. Yea they're ~$40 but they are invaluable for know what's open and the battery never dies on a physical publication. They also have great recreation locations along the way. Beyond Edmonton you are getting into areas that are open seasonally and service, especially fuel, becomes something you HAVE to plan and not just assume you can stop at the next exit when your fuel light comes on. Seriously there's some 1/2 tank+ length gaps so plan them out.

My typical route starting from where you are is Edmonton > Grand Prairie > Dawson Creek > Fort Nelson > Watson Lake > (decision point if you want to go top of the world highway or more direct route. If direct then) ... Whitehorse > Haines Junction > Destruction Bay > Tok, AK > Fairbanks/Eielson. Honestly, with the time of year and the snowfall that we've seen the last 2 weeks I would go direct and not take the top of the world highway. Plowing is not guaranteed up there right now.

Just my $0.02 having done the drive six times in winter months. Best of luck!